@meddler: health sustain vs. grievous wounds
i know this is a difficult question, but will this relationship ever get looked at again? tbh. it has been incredibly binary ever since it was conceived in the first days of league.
either sustain has been entirely overwhelming, or grievous wounds is too prevalent and has straight up invalidated champion kits that rely on it over the years.
there never seemed to be a phase where these mechanics were balanced well against each other, and its like the attempt to fix one broken mechanic with another.
i think we need to rethink health sustain in league on a fundamental level and maybe find a replacement mechanic to grievous wounds as a limiter, that wouldnt be quite as binary in nature.
whats more is, that i seriously hope youre not still considering a shield breaker item in the future. i fear youre going to fall into the same trap and create an unhealthy and binary relationship with shields and shield breaking like we have with grievous wounds and health sustain.
if certain shields are too strong, it makes more sense to nerf those shields.
if shield stacking is too strong, it makes more sense to limit shield stacking. there are plenty of options, like putting diminishing returns on shield stacking. making a second shield on a champion who is already affected by another shield only 60% effective, the third one only 30% effective, could be one solution.
maybe a similar mechanic of putting diminishing returns on health sustain from different sources might work overall better than grievous wounds as a mechanic aswell.
a
wouldnt get his ult cut by 40% from every damage source in the game like now, but also wouldnt become unkillable when he gets additional healing from other sources.
im not sure if this particular solution would work out, but there has to be a better way to balance health sustain and shielding in league of legends.
counter GW??
edit: and a combination of

and
will only reduce regen by a small amount but no longer be an item to get early but upgrade late as you will have to finish them to get more GW.
with 30% GW in a teamfight, he ain't gonna be laughing even if he technically does heal more.