Gotta catch'em all! Gotta Catch'em All!
I just had to do it.
Eh, I thought they were pretty cool. Maybe not interesting by what they did, but unbeatable. Although, I see what you mean.
The average Toa has two powers, one mask and one element. The average sorcerer from Harry Potter has innumerable spells, to give one example. Personally, I like that they have two.