Tho I still find it hard to make my edits as accurate with the new paradigm, they can be done very quickly... I'm not sure which procedure you're using here, but I use the smart tool almost exclusively these days.... I can drag select the bottom portion of a track and perform whatever edit quickly...
Not that many edits require a lot of precision and it can often be hard to get start/end points without going through changes... I still found the accuracy of my earlier (8.5.3 and previous) method easier and faster for those.... but time will tell with some of the new tools in speed comping....
I hope to find out first hand someday...
Keni