i've been using xara for ... well... ages (more than 10 years).
And I really love xara. But there's always room for improvement. So here's my list:
1 - pixel mode: if you design for apps/web you want does sharp pixel edges!
2 - beter...beter... beter.. export to ai and psd.... we love xara... rest of the (pro) world never heard of it!
3 - shadow tool improvement. more realistic falloff (as mentioned bij someone else here) and inner-shadow
4 - shape distort grid (see photoshop)
5 - custom stroke shapes
6 - combine strokeshape with arrowhead.
7 - copy atributes options (what will be copied)
8 - instances libary (bit like flash)
9 - move a group in a Clipview (now you can only move a single object)
10 - more blendmodes (in transparentcy)
I hope someone will read this and grand one of my wishes:-) (nr 1+2 please!)
Peter (www.selmorelynx.com for my work)