I would really like to see an addon released that gives usergroup controlled profile enhancements. This would increase account upgrades.
Here are some features that could really upgrade profiles:
Profile Widgets / Blocks
Audio Player with playlist...
[TH] Profile Views - Track who has been viewing your user's profiles
This add-on allows you to display who has viewed a user's profile.
Fully configurable options:
Days to keep view records
Last X visitors to display on profile