Well, as u've stated, u're still missing on paragons & gear (rolls on amy, rings, life on helmet, sec resist&life on belt etc.). Lvling gems little more. Some trade-offs for pushing are also worth consideration; eg. coe instead of unity, %dmg or as instead of loh on at least one fist. Perhaps gogok instead of stricken, blind instead of cyclone - theres always a space for experimentation.
Followers gear either templar or enchantress (thunderfurry with ruby for both, wyrdward instead of unity or occulus, freeze of deflection shield, ess of johan amy at least for templar).
And there's always factor of RNG of GR as main problem
"This forum has become far too toxic for any meaningful discussion of
the game. I hope they can sort this out and get back to making a game
we can all enjoy without cheaters ruining it for everyone. Best wishes
all."-Hammer's view on diablo 3 forums 2014