for me the best way of movement would be: with the mouse. NOT as in NwN but as in divine divinity. Or like in WoW, wich i find a very handy way of moving around.
DD2 will be fully 3d (4 sure i guess) so in that case the WoW-thingy would be the best.
or best of all: let us choose <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> (except if this will make the game longer in development)
you know, I will buy that game anyway, even if you Larian would use the old dd engine...
grttz