This is kind of bullshit. With the news that this will be 2.5D we already know that the final game won't look all that similar to the concept art. I don't want this to be another MN9 situation, but from the limited news we have on it, it already feels like it.
No Nintendo at all feels kind of wrong too. I mean, in the end I would have picked the PC or PS4 version either way, but since the last 6 Igavanias were on Nintendo handhelds it just feels weird to leave Nintendo out completely. The Unreal reasoning makes sense, of course, and I wouldn't know whether or not Unity would be a good replacement.
Anyway, backing this for sure. Not sure yet if I'm going for the physical edition, though. I don't really like backing Kickstarters that don't show any gameplay at all anymore (and I'm kind of disappointed that weren't able to pre-produce something).