With Prestige adding some depth/complication to ally pairing, knowing what Prestige your ally is on would really help. Consider someone pairing with an Artanis ally going in with a “guardian shell will save me and pull back” strategy but Arty is on the no-guardian shell prestige3 - and then getting a rude awakening when their entire opening army dies. (I don’t expect ppl click on a unit to check for the tiny gs-active icon.)
So put that on the loading screen.
Also, add the Mastery selections (all, including the 0’s) so you actually know what your ally has picked. This should have been there since Mastery existed but pls add it now. See above about how it affects pairing & strat.