I guess mine would be Zaktan. He looked cool, has some cool powers, and got some good characterization in the story. My second favorite would be Hakann. I really liked his character in the story and he too had some cool abilities.
The Makuta in Gen 2 Bionicle is not the same one from Gen 1. The two Gens do not have any connections to each other save for sharing the names of the Toa and Makuta.
I would look around and see if where I ended up had cheeseburgers. Because I love cheeseburgers. If you could have any Kanohi Mask of Power, you would...
I guess I have to go with Krika. I could've seen him become a sort of anti-hero if he had lived past the Karda Nui arc. It's a shame he got taken out instead.
I would decline such an offer, as I would probably fail at making a good appearance for that character. If you saw Krana-controlled Lewa walking towards you, you would...