WarioWare and Rythym Heaven are also mentioned in the clip; but I don't know if those would happen without direct IntSys / EPD involvement. I also don't know if i'd trust anything but remasters for Chibi-Robo from WayForward; so much about what I love in Chibi-Robo comes from that Love de Lic DNA, and frankly I don't think they are capable of capturing that on their own.
If they want to tackle Kururin that would be wonderful though; I doubt even Eighting will ever return to it.
What does IS have to do with Rhyrhm Heaven? It seems WayForward is probably mainly working with EPD2 now, so the collaborations that make sense would be IPs that they manage. That’s one thing we’ve seen that the producers/production groups stay consistent with the contract companies they hire.