I'm also still hoping...
For the record; since my last post on this topic the number of post revisions still stored and cleaned grew from 4899 revisions to currently 5235.
I do use the line in
wp-config.php that should disable post revisions getting stored:
Somehow that does not 100% stop revisions still getting stored.
My only tool to remove them is the 'Better Delete Revision' plugin. It luckily still works on WordPress 3.5. It can be found here:
Please (re-)consider making post revisions management a native option as suggested earlier:
... it would make good sense to have a option in WordPress Settings under by example "Writing" to enable/disable Post Revisions and to clean-up/remove stored (redundant) revisions. Those two options would be most important in my vision. Limiting number of post revisions but keeping enabled the revisions could be extra option.