I'm fairly happy with the collider dropdown, and I find myself not missing the old responses page. The new reputation page works great, and is a huge improvement. Overall, great job!
The only thing whose point I don't really get is the numeric "reputation/revisions/favourites" overview in the dropdown.
Why is this information here? What purpose does it serve?
The weekly and monthly reputation can be checked out on the stats page; I don't think the information is important enough to take up valuable drop-down real estate. Why do I need to know how many revisions I have had this month?
Why not make it just one line:
Seeing more recent responses there, or a tail view of the stats in the new reputation page, would put the space to much better use.