Posted Jun 16 2014 - 03:17 PM
1) Pohatu/etc.'s armor was already in a "swamp-ready" form, but of course the real reason is there was no set form to show for it. But the story reason already works, so yeah (by contrast, Pohatu and Lewa's armor was not "piloting-flying-vehicles-ready", so when they hopped in those, the armor did change slightly).
2) It was stated that Tahu's Stars form is meant to be what a standard Toa (his original Toa Mata form) looks like with adaptive armor on (at least for a generic land-travel setting). That was the explanation used for why he looked different from his 2001 set even though it was said he was being turned back into what he was then. Of course, then the Mata Nui Saga artist(s?) went and confused everybody by showing his Stars form entering the canister long ago, but that was just "artistic license" due to the need to show the present year's set in that year's art. You're supposed to "reinterpret" that shape in your mind as the 2001 set.
3) Presumably the others look something like a Toa Nuva walking rather than flying, but who knows? It wasn't established because they didn't make sets for them at that time.