Changing The Grinder from an FPS to a Robotron style game because of the decision to make it multiplatform is kind of like if third parties altered their PS360 games to match up with the lousy Wii spin-off they were coming up with. So instead of the HD consoles getting Soul Calibur IV they got the same bullshit game the Wii got. If it doesn't go in the opposite direction why the change here? Having two different games with the same IP on different consoles is pretty normal this gen. No one compromises their PS360 version because of the Wii so it shouldn't work in reverse either.
HVS is nothing. Really, the whole reason that anyone gave a **** about them was because they were designing an exclusive FPS for the Wii. But that turned out to be an unexceptional title and now they've gone multiplatform and why would anyone care now? Do they really think a new Smash TV style game is going to light the world on fire? It'll be in bargain bins a month after release. And I like those style games, it's just not something people care about these days. At least focusing on the Wii made these guys a big fish in a small pond so they had the ability to stand out. Even with The Conduit being so-so, Wii owners were paying attention to this company. They've just gone and pissed it away.
Though one thing that HVS had demonstrated is that there is a desire for a great Wii FPS. I assume it is Nintendo's Japan-centric tunnel vision that has prevented them from getting to work on such a thing, because the demand is there. Maybe Retro's working on it.