The Switch has really been the proving ground for this strategy already. Fire Emblem: Warriors, Mario + Rabbids, Link's Awakening, Cadence of Hyrule, Metroid Dread, Age of Calamity, Pikmin 4. Only a couple of these were unprecedented moves, but I think they collectively represent Nintendo being more aggressive in matching 3rd parties to their IPs.
They've also expanded their IP by getting it from other developers (well, Platinum). They aggressively licensed Bayonetta, then just bought Astral Chain outright.
They've expanded what internal studios can work on. NERD, "just" an R&D division, did Super Mario 3D All-Stars soup to nuts, which would normally have gone outside. They also did Pikmin 1+2, which likely wouldn't have even been viable had NERD not done it. NST developed Bowser's Fury, a real and original game which is good!
And they've expanded their non-IP based partnerships. They money-hatted Monster Hunter: Rise, and they've got console exclusivity on the Stories spin-offs. They co-publish Triangle Strategy, Live A Live, ensuring all of Square's nostalgia grabs land in the West (and getting some form of limited exclusivity), and let Ubisoft handle publishing duties for Mario + Rabbids, cushioning the financial risk of letting someone get wild with their IP.
And to bring it back to technology - they're aggressively consolidating their engines internally. Mario Wonder, Tears of the Kingdom, and Switch Sports all share an engine. Having a dedicated tools and technology group is likely intended to drive down costs and speed up development.