I dig the AT-RT for the most part... It's cool, and a bit of a throwback to an AT-PT as far as walkers go. Personal, kind of an anti-infantry weapon or a heavy fire support weapon that walks itself around (An E-Web with legs, if you will).
I like how this same discussion "elsewhere" is fixated on this being a precursor of sorts to another design... The same thing was said of the AT-TE when it was unveiled. It's like one can't just be independant of the other... Designed for a completely different purpose. Rather it HAS to be the evolutionary step towards something else... it has to be connected to walkers from the classic trilogy in some way, as if this technology just SUDDENLY existed when the Republic got Clones.
AT-RT doesn't even imply the same job that AT-ST does, so I'm not even thinking of these as being remotely the same or related... They have 2 legs, that's their ONLY similarity to me. The AT-TE and AT-AT didn't even have that, haha. People still drew an analogy to those two though which I simply don't see at all. Different vehicles for different purposes as I see it, and may both be in use by the time of ESB.
If this thing reminded me of anything it's the AT-PT which looks like an evolved version of this because it encases the driver in armor on the AT-PT and adds a different gun (duel cannon) to the nose.. More squat (stable) too. If one looks like it lead to another, I'd say that's the more likely. The AT-ST's a much larger, much heavier design... Comparing the RT to the ST is like saying the jeep lead to the Abrahams rather than the jeep helped loosely lead to the Humvee I think... for a military analogy.
As far as a toy goes, completely doable in a to-scale version. Hasbro's got no excuse not to. It's a personal walker that I dig... needs made, and no reason a simple one (IE: No action features) can't be done for a $15 on the low end or $20 on the high end. The pilot doesn't appear to have the same body as any other Clone... Armor looks different, so I'm guessing a reused figure isn't cool to me, but I woudl dig it either way.
What other companies can deliver for $15 - $20 is pretty impressive so this should be no different given how relatively tiny it actually is.