GOAT. He's one of the fighters who clearly evolved the game, in terms of footwork. And he set an example of how coming back from injury can be done and persevering again and again (remember he rehabbed his ACL injury and then it went wrong again), then came back but got another long injury). He was one of the earlier guys I remember talking about mental health in MMA.
That he'd still be a tough fight for probably anyone in the top 10, all these years after his rivals first laid eyes on his game, after he's aged and after the BW division has evolved so much and become the highest-level and deepest division in the UFC, shows how ahead of the curve he was and how brilliant a style he came up with.