Bionicle!

My most controversial take is that the story makes no sense and clearly was not really planned out. The ending basically sucks. A reboot could do wonders (unfortunately, not the reboot that we got though). (Probably not that controversial really).

Non-controversialy, the premise of tiny robots fighting a cancer to save a giant body is amazing, the ideas and concepts unique and delightfully alien in a similar way to Morrowind in how the world is so bizarre yet grounded enough that it can really pull you in!