I played sacred 2 for a while and they had something in your stat screen that you moused over and it showed every possible stat. I can't remember half the things that they displayed but it would be great if Grim Dawn had something similar to that. Titan quest did a pretty good job with that but a few more stats like total dodge%, total damage reduction if hit on body, if hit on head, if hit on arm etc since each part of your armor can be hit. Others could include total fire damage, ice damage, pierce damage, so you know what your strongest damage is so you know whether you want the weapon that adds +20% to ice damage or 20% to pierce damage.
Basically show us every possible stat you could think of =).