Heal mode 250% +

[sinso]

Why is it capped to 250%?

It's really hard to get it and it's not game breaking.

[Cathbald]

It's actually not that hard to reach if you gear for it, if you find it so it's possibly because you value other stats more.
I once managed to reach 210% heal mod before leaving the T1s! (I tried to see how much i could stack and invested in con, though)

And it's a really powerful stat so the cap makes sense imo.

[sinso]

It can be a powerful stat playing in normal difficult, but in insane or madness it's not so easy choose between 35% heal mode or whatever

[anp]

It can be a powerful stat playing in normal difficult, but in insane or madness it's not so easy choose between 35% heal mode or whatever

tl;dr healmod is the best stat
no matter which difficulty, I almost always wear the Girdle of calm waters till endgame, when I get some randart belt with 20+mod and more stats.
When there's item with 35+ healmod and i'm on 100% stun/confusion resistances, I would prefer it over almost everything (exceptions are items that boost your damage very high, like Maslek's hat and Crimson robe for doomed, etc.)

[Coldbringer]

With a good regeneration infusion you could full heal every turn for 7 turns. And Healing infusions fully healing you instantly without taking a turn. Healing light, ditto. Plus all the other healing methods from items and skills. Might not be game breaking, but pretty darn OP!

At even 50% I notice a huge difference.