It seems there has been some pretty serious impact on their user experience from reading around on their forums, and it's quite multifaceted... they revamped their fee rules in a messy way. And look up 'zcash sandblasting attack' for some interesting stuff. 

 My fav part is how the zcash team handwaved away my points by saying that light wallet users were unaffected.

AKA "just accept a weaker security model and it's fine."