Ekko Ult Heal

So, one of the questions asked was >Does Ekko's ultimate even need to do damage? Isn't the reposition and heal enough power and thematically appropriate?

to which meddler said (Damage on Ekko's ult does a couple of things we like: It encourages riskier, more offensive plays with the ult. Removing the damage by contrast would push Ekko towards mainly just using it to get out of a fight safely, rather than sometimes using it to re-engage, to set up an ambush etc. It makes a significant amount of Ekko's damage unreliable, introducing a skill test for Ekko and a point of counterplay for his enemies. Tank Ekko's currently a problem, AP Ekko's much more reasonable. If we were removing all the damage from his ult we'd need to give him a lot of that back elsewhere to keep him functional, at least for the AP build. That'd have to be put in more reliable, less CD gated places though.")

This made me think about a similar question. Does Ekko's ultimate even need to "heal" you? If it didn't heal, but instead gave you a Shield for a couple seconds for the amount that it presently heals you, then Ekko would be "rewarded" for going ham with the R, and would receive 0 heal if using it simply as a get out of jail free card.

Yes Grievous Wounds would no longer reduce it, but numbers can always be tweaked, and this would make it way more suited. For aggressive as opposed to passive play. Plus it means leaving him alone 'makes the heal wear off'.