If you want to make the arument... Have you forgotten about Metru Nui? That Island is essentially the EXACT same shape (give or take, it's pretty close) as Mata Nui, but it's a city instead of a natural island. As far as Okoto, they used a different shape to do what they've always done: divide the island into regions. Sure, Voya Nui, Mahri Nui, and Karda Nui didn't have 6 regions divided by elements, but as someone said earlier, G2 is going back to the roots of Bionicle and the roots have an island divided into different regions based upon element. The concept can only be taken so far... I personally would've rather seen this year venture off to a new location (I'm waiting for a full continent in the Bionicle universe), but I knew it was going to stay on the island. But I see nothing wrong with Okoto as far as "laziness" or "lack of creativity" when compared to Mata Nui.