Project Guard is either in development at Platinum as a seperate game, or has been incorporated into Star Fox Zero, judging by these comments at E3.
Both Guard and Giant Robot were incredibly early prototypes, as Star Fox was, at E3 2014. That kind of basic, conceptual build has never really been shown to the public, let alone been played by journalists, so it's not surprising how rough that all looked. Giant Robot may yet appear as another filler title under a different name, or as an eShop only game.
Genei Ibun Roku won't be cancelled, I expect Nintendo had very low sales expectations for this game and budgeted accordingly. Perhaps they'll do what they've done with other niche releases, and have the standard game eShop only, with a special edition physical release. Lost Reavers I'm a lot less sure on, but we may yet see it launch on eShop in the West, I think it's less likely than Genei Ibun Roku though.
Basically I think most of these Wii U games will still come because Nintendo need as much software as they can get on Wii U. For titles already completed and launched in Japan, if they can keep localisation and distribution costs down, it doesn't make any sense for Nintendo to with-hold them in the West, even if they're digital only, it's still much needed revenue coming from Wii U.
Finally Federation Force won't be cancelled because of negative fan feedback. Again, 3DS has very few Nintendo titles in the pipeline, so one of the handful left won't be cancelled. It's possible there'll be a delay, and perhaps they'll drop the "Metroid Prime" brand, but I highly doubt Nintendo will cancel the game. They'll trust Next Level and their publishing overisght to do a good job.
