Which artifacts are best to equip a hero with?

It's a shame that you can't equip gloves and rings separately! And I also collect all the artifacts. I take them from strong enemy heroes and give them to my weaker ones.

Yes, by the way, if gloves and rings could be placed in separate slots, that would be great...!!!!!!!!!
:):):) This should be noted by the game developers so that they release an expansion pack with such features - it would be wonderful:):):)