Here's a clip from Gina Bruno talking about the Maras balm fix coming to update 35 next week:
https://clips.twitch.tv/WittyUninterestedDragonfruitCharlietheUnicorn-Pc87Nr7R7mk0Whx3
A reduction in the heal by 50% is nice on paper, but this does not solve how ridiculously strong the proc condition is. Because there is not a cooldown on the initial heal, even a 70% reduction would still make this the most stat dense survival set in the game.
I'm all for new and powerful sets, but I think a reduction in the heal by 20-30% as well as a 1 second gcd on the initial condition would make it in line and still as strong as other defensive sets. It still will have a powerful burst heal AND a purge of all negative effects every 15 seconds, it just won't also scale in effect the way it does now.
If you make this adjustment without a change conditionally with how the set functions, you will have to make more changes in the future imo.