This looks like a good thread for this. And maybe someone can point out a "problem" that I'm wrong about!
First, really like the watch and I certainly don't expect everything to be ideal yet - and for some things it may be impossible to avoid compromises anyway. With that in mind, here are the things that bother me a little.
1. I am finding that for my usage, I really wish the time would display always. I know, battery limits and all so I'm not faulting Apple. I want to be able to look at the time without making it obvious sometimes or just not have to make an excessive movement.
However, I wonder, especially as the power issue improves, if there isn't a possible solution. As I understand it, the black pixels take no power. So, what if they gave at least on option for a special watch face just for this that is really simple. I'm thinking of a very thin hour and minute hand image (no seconds). It would take a very low number of pixels and maybe so few that power cost would be fine for most people (again, this would just be an option people could choose). A thin digital readout could work too, but that would take more pixels. I suppose updating the screen is part of the power issue too so just update it every minute. Much like those central clocks in some businesses (or my old school) used to do. Every minute, the minute hand would click over to the next minute. If this cost me 15 minutes of battery life, I'd be happy with that.
2. Maybe I missed something, but it seems when looking at any of the digital clock displays, you only get hours and minutes - no seconds. On the traditional dial faces, you have the second hand, but nothing on the digital options. This seems really odd since we have a watch that is accurate to milliseconds, yet can only see the most recent full minute! Surely they can fix that!
3. I like lots of info available to me so I use the Modular display even though it isn't very pretty. I do not understand why they time must always be in that one spot. If nothing else, I can see a lot of people who would want the time to be in the biggest spot with bigger numbers. But, ultimately, I just want as many options as possible so that pretty much all of them can be put in any spot. For that matter, if someone wants a display with no time at all, that should be possible.
3. I wouldn't mind a complication that showed my HR the last time the watch checked it (10 minutes apart normally and 1 minute during activity).
4. I'm find some quirks on the raise to turn on display. Unlike most people, I think, I wore mine to bed. I'm not sure what the exact input it is looking for from the various movement sensors, but it seems quite difficult to find the "right" way to move your arm to get it to turn on. Of course, you can always tap it, but at least when I'm lying on my side, just moving my hard various ways usually doesn't work. It is possible this is unavoidable - that if they made it handle that situation, it would turn on too often in others.
5. I am finding problems with 3rd party apps, but since they will need time to figure out how to work with the system, I just don't worry about them for now.