Hi,
First, great work done on xwiki 
Second pain points:
- from developper. Too much .js in xwiki now. It is difficult to debug/customize code. IMO using CSS instead would be better and accessibility friendly. When some js code doesn’t work well, most of features are down.
- from user: too much js with lag (ie spinner.gif) and SpaceIndex macro ’ like missing.
I mean a light tool to displayed all recent children pages of a parent page (with date update decr order)
ie
ty