** UPDATE **
Found out that the issue is caused by bartender it seems. Still would love to get more options for the raidframes or actionbars to customize them to my liking how I can do it with other addons.
ORIGINAL POST
So it is nice that you already started improving the UI but there are still elements missing that make me use multiple addons that then also causes errors with your game potentially etc.
Right now I need to use Shadowed Unit Frames and Bartender to get the UI that I want. Already commented in another topic in terms of the raidframes and options that are missing there (some even have been there before) so that covers the Unit Frames part. Just to add it here still would be awesome if you could also give exact X/Y coordinates to place them etc.
What is still missing for the edit mode from my PoV is that you can zoom into the icons since it looks cleaner without the round borders around it. Furthermore to be able to stick the icons close to each other, being able to decrease the “padding” even further than right now. Having an option to potentially only show bars when hovering “fading out” option from bartender.
Like this I potentially could even stop using a class UI since I could built one with your bars myself and still would get an insane result of having not used up too much space of the screen to play as good as possible and see all effects properly.
Somehow doesnt let me add a link to see my current UI and dont have an option here to add a photo. Would be good to potentially at least tell people which uploads you allow for photos 
The reason I had it off was to test if this mouseover cast options only works with your raidframes and it unfortunately does. SUF creates their own raidframes. Although it works with mouseovers macros, it doesnt work with the mouseover function you added (at least didnt know about it before it was there). That leads to unnecessary many macros where you are even have a creation limit per class etc.
Quickly also wanted to highlight the framerate, ms etc. that you even have in the game and display them but only when you hover above something, you are not able to directly display them somewhere, although they could be interesting to the users if something feels weird (CSGO also doesnt hide the net_graph that shows fps etc. if you enable it).