My humble opinion about Defenses

They technically should make all 3 defenses the same;

Armor
Evasion
Energy Shield

All 3 at XXX - defend against 25% elemental and chaos
All 3 at XXXX - defend against 50% ""
All 3 at XXXX(X) - defend against 75% ""

and if they're insistant on heavy armor having movement penality then they get a bonus against physical damage, a noticable one like it should be now (lol) and ES against spells, but not phys and evasion well, they just evade.

Then on the tree have a few nodes left, bottom, top, right - for each class respectively that add 2% on each of those so you can get it to 80-85, and at a mega stretch using all the points and specific items on a giga build maybe 90.

Instead of - you've finished some of the game we're going to nuke your resistances. You've got physical armor, you're going to die to everything because we can't work it out. You've got 15k energy shield that recharges almost instantly at 4000k per second, you're good bro back to the game

Lol really it wouldn't be hard, it would balance it for all classes and it would make mathematical sense.