cyberzip
Hm, you don't find it messy or disturbing to see all tracks in the track pane to the right? Or hard to pick the right track from that huge unfiltered list (that weirdly also includes audio)? Or find it inconvenient that the filter stays put when opening the PRV again... at least I rarely edit the same tracks in a row.
I couldn't use PRV
AT ALL before if I was using MIDI files brought over from Finale or BIAB because they typically had 4 or 5 controllers per track. That was practically impossible with a single track and multi-track PRV was out of the question.
The new IU has some problems that I would like to see cleaned up, such as you mentioned. These all strike me as very, very simple clean-up items that should be corrected in April.
You mentioned some persistence issues with the PRV. I have some general complaints about persistence. In particular if I have moved windows to separate monitors, that is all lost every time I start Sonar. I could live with that, but the "track manager" selections are not persistent either, and there is really no excuse for that. I never need to see the Metronome fader or the rightmost fader that corresponds to the audio interface. It is a real PITA to have to go back through all of this every time I start Sonar. That stuff should be saved with the project.
I am just finishing a little project that I started on Friday after updating to 2007-03. It is a song I wanted to do anyway and this gave me a chance to practice with the new UI. This integrates MIDI tracks from Finale (scanned from manuscript) and tracks from BIAB, plus some MIDI I have entered directly into SONAR and some WAV files. Basically a little of everything. I found the PRV very usable despite the various issues that have been mentioned.