Self healing should be reduced somewhat in ARAM

Allied healing is reduced by 50% already for a very good reason (thanks mostly to the healing spam by Soraka and Sona). But self healing does not seem to be reduced at all. I'm not saying nerf it to 50%, but maybe take 20-25% off of it, or scale it down as time progresses. Like 100% self healing ability at 0:00, but maybe cap at 75% self healing ability at 20:00. Given the inability to specifically pick champions, often there is not a direct way to deal with "super healers" like and (those who can use GotU especially). And having to rely on items and ignite alone is often not enough as the game goes on. There is a ton of self sustain in the runes now too.