I was big on this when he came out. I thought he didn't have solid enough basic takedowns. The funk and rolling across his back and all that is brilliant to watch in folk, and he's somewhat proven me...."less right" in freestyle. But like you said when it comes to those guys around the top it's kind of a glaring issue that he doesnt have any reliable "go-to" attacks, and he has trouble creating those awkward positions he's so good in off of their offense.
The subject of basic shots is interesting. He has a great lefty knee pull/ankle pick, which was all we saw at the trials, the same misdirection double taylor got yaz with, and in college he used to hit the low double that is retherford's only shot, but I havent seen it lately...I don't know whether to say if his problem is "go-to" attacks, diversity of attacks or just not inflicting enough damage in his hand fight.... its probably mixture.