Really, I think that all this is great how they're making this G3 idea. My only nitpicks are the brick system change, and how some things are changed story, and sometimes, character wise (I think I'm saying this word right.) have been changed. But I have a solution to my nitpicks, the first be the brick system. We could keep the brick system, but also have Bionicle figures of the Toa, and others, kind of like what lego did for Bionicle, and is doing for LEGO Star Wars.
This way we can still have the brick system, and keep the traditional robot making thing.
For the character changes, we could in a way say that the first Toa group was the original for the first group given the power of the spirits/gods, keep in mind this just what I think could be a possible good idea, and that this new group is not the original, they are just granted the originals names, this way there is still a deep connection with Bionicle, as well as keeping things new like you guys are wanting.
(Bonus: This can also give a little comfort to old fans, and help them adapt.)
Also, if we ever add the Barraki, could they be pirate lords?!?