I think Sanko does a fine job.
I've said it before...she knows what she is seeing, particularly in the grappling, sometimes more so than the experienced pro fighters she is working with.
Some of the criticism of her is just off the mark. She is not just 100% complimentary (I heard her be politely critical several times last night), she is just very respectful and errs on the side of being positive. I also don't know where anyone gets the idea that she presents her training and fight experience as more than it actually is...?
I actually quite enjoy her with Felder...they tend to be a little more chill than Rogan and DC, for example...but on the whole everyone does a pretty decent job. Even Dom has settled down from previously being overly argumentative and critical.