I think that the one I really don't rate too much, that's been mentioned here, is Harmony Tan. (Although, as a caveat, she has made progress and still is pretty young)
But, yes, I also don't rate Jade too highly, and certainly don't think that she's going to be top-200, say, any time soon.
I've known her since she was a young teenager and she was (and still is, I believe) a very solid, very fit, hard to beat, good clay courter. I think it will be a tough match for the two of them but Maia seems to be more on an upward curve.
Bah. Still the 4 points from this week will push Maia up to a further CH on Monday week, probably in the 630s. Will move ahead of Suzy L and back ahead of Jodie B to GB #16.