Since an Irelia VGU will take more than a year before it emerges, how about a change to her ult?
I've always found her ult's healing to be wonky. It works too damn well when used against lane minions, but use it in a team fight against anything with even a slight amount of bonus armor and you barely heal anything. But looking at how Riot reworked Irelia's passive to work when she's outnumbered, I wonder if this sort of stuff could be done to her ult's healing factor.
Here's what I think should happen: the healing should be made potentially stronger, but only if you're almost dead. Namely, the healing should increase based on how low your health is. Either that or the healing could be changed to be based off enemies hit rather than damage dealt (though I always get hated on this suggestion).
Regardless of what's done, Irelia's ult needs to be modernized if her VGU is going to take over a year to emerge.