The text cant be made any smaller for the font, stated by Luckshya (apparently GUI is a bigger mess of code than I thought) so what you see right now is the absolute minimum for the texr.
I have my own preference as well, which is the full listing, makes awareness easier and drives competition better imo, but aXXo's points on the implementation could not be ignored in that it does mess up the flow of the relying on the right side to to spot an enemy flanking you.
Still, 21 votes right now, 17 of which have no care in the world for aXXo's point of view so how about this. Let's let each decide what they want.
So if its possible, we can have the old way by default and whoever needs the compact listing (since its a niche grouping by votes) of the GUI, they can enable it for themselves via cmd.
Cmd format:
/gui <simple/full>
That's a reasonable compromise is it not? (if its possible to script like that)