Things that aren't that great from a competitive standpoint.

If you queue up units from a building before it is built, the queue will disappear as soon as the building is finished.
Please make it an option to pan with middle mouse button.  Panning and move commands should not be dependent on the same button.
Hotkeys must be scrolled through with tab? Please make, at the very least, hotkey specific ways to jump from groups of tabs.
Units seems to have a mind of their own, moving forward into turrets, and away in advantageous situations.  I sdhould not have to babysit my units just to make sure they are doing what I intend them to do.
Also, when targeting down buildings, I have seen multiple times after taking out the sheilds of said buildings that they suddenly become invulnerable? I can't explain, please explain.
It should not be up to the player to make sure that units work as you would think they would.  I understand when you form an army, the units will automatically reposition to a central area, but If I make the slightest erropr in unit selection, I will find that my main force is consolidating backwards, costing me very important time.
Multiple builders can be sent to build a single building, but when giving the initial command to build a building, only one will build?
I haven't got a clue how much metal or quanta I am receiving. With a streaming economy, I would like to see the exactly value over time each stracture is contributing to my economy.  Say a building builds in 25 seconds and it cxosts 50 metal, I would like some sort of indicatioon on the ui that this action would consume "-2 metal."  This is an essential OBVIOUS feature for both new and old players.