Well, i've got a whole post with this premise that I could bring over from Era. It's from before the Expansion Pack actually launched and we saw the state of N64 emulation though, so i'll have to make some, uh...
changes. Here goes:
Preferably online play and cloud saves would be a free service available to everyone, but Nintendo will never be that generous so i'll have to limit myself somewhat. Here's how i'd pitch the contents of an improved NSO:
Online Play:
- Implement dedicated servers for popular titles like Mario Kart 8 Deluxe, Super Smash Bros. Ultimate and Splatoon 3.
- Ensure upcoming titles use the NPLN netplay library in place of the outdated NEX; update major / popular titles to make use of it too.
- Update existing titles to support the invite / party system added in late 2019.
- Add support for messaging friends (available for everyone) and voice chat (NSO subscribers only) through the Switch OS.
Save Data Cloud:
- Create a better solution for titles like Animal Crossing, Pokemon, Splatoon and any others that don't currently support cloud saves.
- Allow local save back-ups via USB, available for everyone.
Smartphone App:
- Make the Japan-only My Nintendo app available worldwide. Technically not an NSO-only feature, but I still want it.
Special Offers:
- Make vouchers available to purchase in the US and territories tied to it (as they're still available everywhere else).
- Create a public schedule for Game Trials, so subscribers know what games will be up next in the rotation while the current one is available.
- Relaunch Super Mario Bros. 35, expanded to include The Lost Levels and Super Mario Bros. 3 as additional modes.
- Keep making NSO-exclusive software of that nature. Don't always have to be battle-royale elimination style games if they want to experiment with something else; the criteria is really just free-to-play games where the main component is online only.
Expand Your Experience:
- Upcoming downloadable content for major Nintendo Switch titles (Animal Crossing: New Horizons, Monster Hunter Rise, Mario Party Superstars, Splatoon 3, the sequel to The Legend of Zelda: Breath of the Wild, etc) should be free to keep for all Expansion Pack subscribers.
- If it's too generous to have all that content readily available for new subs years from now, have them only available to redeem for 3-6 month periods; you still keep them if you redeem them in that time.
- You may also have to limit the amount of times an item can be redeemed from the same Family Group to eight, like the Splatoon 2 gear codes; so you can't just keep adding people to give anyone the DLC content for free.
Nintendo Studio:
- Unlimited access to music from Nintendo titles spanning their entire catelogue of systems, available on both Nintendo Switch systems and a dedicated mobile app. Listen to your favourite playlists in-game if those titles support the feature.
- Produce new video content available for subscribers, including brand new animations based on Nintendo series (think the Kid Icarus, Pikmin and Star Fox shorts during the 3DS/Wii U era) and a series of developer interviews / mini-documentaries (like the videos produced for Rare Replay) going in-depth on the development of past Nintendo titles with previously unseen pre-release content.
Online Classics:
- The base Nintendo Switch Online sub includes Game Boy in addition to the already available NES and SNES.
- Game Boy titles will support a ton of features; the biggest of which being Game Boy Color / Super Game Boy display modes and online Link Cable support. Pokemon Pinball and Kirby Tilt 'n' Tumble will also be rereleased for the first time, with emulation of the rumble and accelerometer features built into the original cartridges.
- The NES and SNES libraries will continue to be expanded too. Features like PAL versions and four-player support should retroactively be made available for supported Super Nintendo and Game Boy titles.
- NES Zapper (Duck Hunt, Wild Gunman, Hogan's Alley), SNES Mouse (Mario Paint, Mario & Wario) and Super Scope (Super Scope 6, Yoshi's Safari, Battle Clash, Metal Combat) titles should be made available for their respective systems, with new control methods utilising gyro and touch.
- Get around to releasing the remaining first-party titles for NES and SNES. Fan-favourites like Earthbound and Super Mario RPG, in addition to lesser known titles like Devil World and Sutte Hakkun. There's still a lot missing, even titles like Mach Rider and Murasame Castle.
- The Expansion Pack includes Game Boy Advance in addition to Nintendo 64 and Mega Drive, with the promise of more platform(s) being added for no additional cost in the future (can't decide on what would be the next reasonable step).
- Nintendo 64 emulation needs to be adjusted. Fix visual errors in titles like Ocarina of Time and Yoshi's Story; work on reducing input lag; and properly enable support for the Controller Pak in compatible games (Mario Kart 64, Win Back, etc).
- Nintendo 64 should support Transfer Pak emulation (including the first-ever rerelease of Pokemon Stadium, which can connect to the Game Boy app) and Nintendo 64DD titles (with F-Zero X: Expansion Kit being available alongside the regular cartridge release).
- The update schedule should return to being monthly; alternating each month between updates for the base sub platforms (NES / SNES / GB) and updates for the Expansion Pack platforms (N64 / GBA / MD / ???).
- With the increased subscription price, licencing deals should be worked out with publishers like Capcom, Konami, Bandai Namco and Square Enix to allow more of their titles to join the service, as those seem to be the biggest holes in the lineup based on fan feedback.
With a service like this i'd be a lot more willing to pay the current offering price.
I will add; there's proof in the most recent Switch firmware updates that Nintendo are slowly working on implementing My Nintendo Missions as a Switch firmware feature, for Switch software, and that's likely to have some NSO implementation in some form. Looking forward to seeing how that turns out, because people have been asking for an achievements system for a long time now.
Of course, my big dream hopes for the retro game service are probably too unreasonable, and i'd be content enough with the above. I'll still share them anyway though!
- Completely relaunch the service as one uniform international app with all titles more easily accessible. Easier game browsing; more convenient for online play sessions; and access to the full library of games from the JP / International apps, with language options more naturally intergrated into the UI.
- Nintendo Archive; a service where previously unreleased games, limited-time releases and trade show demos are made available (again) for the first time; Satellaview titles, Sound Fantasy, Mother 3 Spaceworld 1999 Demo, etc. You could see it as a digital companion to the 'Nintendo Gallery' museum set to open in Japan.