I've been able to play in all three BWEs and am overall very happy with the progress that has been made. My list of complaints from BWE1 was originally about 25 or so items long but has shrunk until virtually gone. Now after BWE3, there are only a few things I could see that might help if they added or changed.
First, the dye system should be updated to show not only the dyes which you DO have, but the dyes you don't. Kind of like the Ranger's pet menagerie shows which pets you have and which ones you don't. This could help us collection freaks know at a glance what we don't have.
Second, it would be nice to have an option in the character creation screens to turn off hairstyles while customizing facial details. I realize you can get this effect by selecting no hair or selecting your hairstyle after, but it is possible to forget to turn it back on. I just feel like if you can have an option to hide your armor while making choices, you could hide the hair as well with a toggle button.
Third, I would still like to see some of the prices in the store drop. Since one would have to purchase bag slots for each toon, I feel they should be a lot cheaper. Or if they are going to be as expensive as they are, they should be account upgrades. I did like the costume stuff in the store. The glasses all looked really cool. And I noticed there was no option for purchasing additional character slots. Would this be because they have not settled on a price per slot?
As far as bugs go, I only found one area where I had to map travel out of because I got stuck in terrain I couldn't escape trying to jump to a vista.
What I'm looking for with this thread are other's ideas/observations about what you would like to see changed or improved prior to release.