Looks interesting! I already use Git to manage version control for my WP sites, so it's probably not for me, but it could be very helpful for those who aren't tech-savvy enough to use Git directly -- i.e. 99.999% of the WP-using population.
If the developers are reading this: move that info up to the top of the page! Currently it's buried down in the "Features" section, making it easy to miss. Don't hide your light under a bushel :-)
TIP: For better diff's use "--skip-extended-insert --skip-dump-date".
A nice gui on top of that is welcome (although I'm not sure about the $30K).
[1] http://dev.mysql.com/doc/refman/5.0/en/point-in-time-recover...