First off, I love that I can move frames around finally. I already have a fairly decent setup for my needs built on my IA and will work on my Trooper as soon as the servers are back up. I played with all the options and spent probably a good half hour moving things around and fixing them to my liking. However, there were a couple of features I'd hoped to be implemented that I did not see:
1. Allow the portraits on your frames to be toggled off or on. I feel the circle pictures of our characters to be clunky and being able to turn them off would help me clean up my personal work space (my screen).
2. Allow the experience/legacy bar to run vertical or horizontal. My setup allows for a horizontal experience/legacy, but would fit better if I was allowed to set it to run vertically (with it filling top to bottom or vice versa). This could also be considered for the menu bar.
3. Allow for a grid to be put up during UI customization. It took me 10 minutes alone to get my interface centered. That would be easily achieved with a grid with clear definition of center line vertically and horizontally.
4. Attach the chat box to the Planet/Mail/Friends indicator. It was annoying to move that then realize my chat box was still in the upper left corner. Also allow for the chat box to be tinkered with more than just the general options in the preferences window. Can we please also have more font sizes? 12 is too small and 14 is too big for my chat box!
5. This may seem small, but my UI philosophy is minimalistic but informative. When I'm fighting, I want certain things gone: Menu bar, certain action bars, minimap (except for maybe huttball, but I could do w/o), etc. Can we allow a "Hide while in combat" option?
6. Finally can the conversation rewards windows have an option to scroll up into the screen (as they do now) or down into the screen? For kicks I just put it up top and noticed they still scroll up so it looks funny. It's not where I ultimately put mine but just thought of people that may want them up there and to have them still scroll up is weird.
EDIT:
7. Stealth/stance Bar. We have one for the cover classes, why can't we look into one for the Smugglers/Consulars and Agents/Inquisitors for their stealth modes or for the Knights and SW for their different stances? (thanks to Tenthletter for suggestion)
8. The ability to un-anchor the buffs from the player frame and move them/resize them to fit our own wants. (Also Tenthletter's suggestion)
I know the videos said that this is only the start of this feature and that you look to expand this more and more as the game progresses, but these are just some things I noted right away. I may see more as I play more and will update this thread should I need to. Thank you Bioware for taking the time to read and any other replies that offer good ideas I can add to this post.