I ran into the same issue, I wanted to make a full plate max defense/ele res gear.
But just the chest armor gives me 112% res all. Only damage is fall damage, and I think other damage heals me 
Another Bug: having durable and durability increase enchant, will make durability behave strange. Repairing does not always repair to max, sometimes rejioning the game the item suddenly has 1 durability left, yet when taking a whisper or something it then suddenly shows 2 durability.
112% res all is insane with one item, I was planning the other 3 gear slots to be dense(+armor)+10% elemental res enchants.
Wonder how high resist would get then.
I don’t think just adding a max res 95% or something will fix this, as then you can still just make this chest piece, and have all damage on everything else.
I think the enchants/gems/facets etc need to be tweaked, but put in a 95% max for example anyway. Personally I don’t like all these enchant power gems at all, they seem way to powerful. And now so many gems have enchantment power that makes all gems very boring since all these do the same. Example I liked old ones like the shock buildup gem etc, atleast then they were still all unique and interesting.
The durability enchant/facet gives 100% durability each. Reducing both to 25 or 50% will still not fix this issue due to the new gems. And like I said I can still have 3 more armor pieces and a shield.
Oh and having a level 1 character craft items makes any type of item level 1, or have the requirements be 10 or 10/10. Not sure if that is intended 
To be honest this resist thing and boring gems, really makes me not wanting to play the game anymore, untill its changed.
The new exalt is nice it will take like on average 200x to exalt an item 4x with the stats you want, to get the exact rolls you like. And it will take a while to find 10/10 resistance rings.
This is better over the old exalt where I could max out a character in just a few days.
But enchantment/gem wise the pre co-op update was better.
And why is plate armor just the best on everything, why not give lighter armor more elemental res than plate? I’m not sure anymore but was that not how it worked pre co-op?
I’m not sure about the radiant/essence embers its to easy to max out stats still, get 100% or 90% roll and 1 radiant is max. even at bottom roll only ~6 radiant embers wil max a stat. I’ have played diablo2 long time, there finding a unique with all 100% rolls can take years of gameplay to find, which might be the other extreme end :).