The first thing that I did when I got my watch was turn off any form of auto updating and as a result, I've been able to keep my watch at 3.5. Turning off auto update is one standard thing that I do for every electronic device I ever get, as it seems like updates these days always make things worse. The watch has been very well behaved when compared to the other issues that I am seeing here. Battery life is excellent, I don't really have any issues with gestures, the GPS always seems spot on. Sleep tracking sucks, but I really don't think that's ever going to change.
By sticking with 3.5, am I missing anything important?