So why doesn't neone max warmth with ES build i have a orb sorc w/max warmth and the only time she loses mana is against MB. she has like one hard pt in ES and telekenis and she never dies mana eats all the damage and warmth fills it right back up. Just a thought!

1 pt into warmth is enuff considering +skills

Reason:
20 - Frozen Orb
20 - Cold Mastery
20 - Ice Bolt
20 - Telekenesis
Rest up to you but most likely to es to get that 95%

Personally would gimp to much damage really ofcourse if you had extremely good gear you would not struggle but wouldn't be the same as normally specced ones.

To be honest, I think the OP has a point. I mean, maxed Telekinesis with all +skills takes your very close to, if not over 90% ES (where 95% is max), so imo those points could be better invested in Warmth instead of ES. Anyway, have to look up higher ranks of Warmth, to see how they scale. If it's like 10% regen per level, I don't know whether it would be worth it.

Well depends I guess really something that could probably work either way and could come down to your personal preference our how good you are at teleporting away form danger.