I've done the following to mine:
Align Bezel
WM Pearl
New Insert
CG's shaved
Oiled + Cleaned bracelet
Other than superluming it, I think I've done basically all you can to the V2 without getting into huge money (I don't even know if a gen dial would fit...pretty sure it wouldn't) but I've been advised not to replace the crown or tube as they are "excellent copies of the original" and perform quite well. I've taken my SSD swimming and diving to fairly shallow depths (60-90 ft) and it's been perfectly fine... the only issue I have with it seems to be some junk on the reverser wheels (as per The Zigmeister's article on the subject) in that occasionally the watch won't wind off the crown (it'll make a rapid clicking noise). As such, it could probably use a cleaning but since I don't believe in handwinding watches more than the absolute minimum turns to get them going (again, as per The Zigmeister's article) it's not really a huge issue to me.
Best of luck!