Tested v21 with a couple looks that drove me to distraction when I tried to fit manually - eg. TGC's RC and Lana looks (look deceptively benign ... ), or Scamp's Kelly look (short, compact ... weird AF)
It's pretty good right out the box & gets a lot better with training, even with those difficult presets.
It quickly succeeds fitting trunk & legs - but where it seems to really struggles without making much headway is:
a) Arms. Either it's my weird-ass custom look- or we need separate upperarm/forearm morphs, just like with thelegs. Not sure what its problem is exactly - it appears unable to "straighten the elbow joint" (probably has nothing to do with the joint's angle-limits or goal, but that's what it looks like)
b) "Thigh Apart" seems to have insufficient range for the Kelly preset - thigh nodes fit almost, but not quite. I tried extending the morph's limit times - doesn't seem to give it much more range.
Mind you, we're talking about .3-.9 loss after 2-3 runs, so I'd say it's definitely getting the job done. Just seems to me that it merely lacks a couple more tools (morphs) to do it perfect.