You still won't be able to drag and drop in Source Control Explorer (some changes are just too large at this point), but you will be able to go to a changeset (without going through the back door using Get Specific Version solely for changeset look up).  In the next drop, the Edit -> Go to menu item will bring up the Find Changeset dialog when the Source Control Explorer has focus.  Also, it should appear on the Team menu.

How about a power toy VS plugin to fill in the gaps?

There are lots of things we'd like to do, but we can't at this point in the cycle.  We are thinking about putting together a VS power toy plugin with some of the things that didn't make it into v1, for version control and work item tracking.  What power toy features would help you get more done and have a happier v1 experience?