The first step is admitting you have a problem.
I'm posting this here to hold myself accountable. I could fiddle with my edits, review other edits, and think up ideas for further tweaking. However, I really want to put a stop to this and close the door. However, I need to keep all the files in place for an eventual version with Emanswfan's sources. Therefore, I'm announcing that I am done with the edits. What lies in the Final Cut timelines is the final product, and there will be no further changes until encoding V3. The madness has to end somewhere, and I'd love to put the prequel era behind me as we coast closer to the 'big bang' of the sequel trilogy era.
I'm in the contemplation stage of encoding what I have as V3, the finished version "for the ages," and publishing it, rather than waiting for the regraded sources. Once all three of those are extant, I will likely reencode V3 with them. That way I can mentally be finished with the PT edit project and move on.
And as a way of leaving myself an out clause, if any worthwhile ideas for changes cross the threshold of breaking my announcement of being finished, I will post about it here. Aside from such a case, I am finished! And I'll likely be releasing V3 in the near future, once I get my Custom ANH:SE finished.