I cannot answer if EDEE would be better for you. Some veterans favor EDIE and EDEE. Vast majority are playing this version though.
The Interface has changed, and yes it is do the the unity platform and the multi platform nature of it.
In the main screen, lower left corner there is a toggle for window or full screen. You might experiment with that.
Also, in game up top-right you will see a keyboard icon, there you can set the keybindings for your account the way you want it.