A little bit about me. I'm currently around rank 600 on the Leaderboards. I cleared GR95 with this build and still climbing the ladder.
At 93 I hit a wall using the cookie cutter build and different minor variations of the build. I tried different Mantras, runes, legendary gems, passives, etc.
All of which didn't seem to have enough damage or damage reduction to complete GR93. I was always behind 30 seconds or 30 seconds late however you want to look at it. My damage wasn't quite there and I was dying quite a lot.
Then I finally thought of something, what if I change to Mantra of Conviction (8% passive damage/16% active damage) with Intimidation Rune (Enemies do 15% less damage) and changed the damage passive to Resolve (20% damage reduction). Another change I made was Dashing Strike rune to Radiance for 15% more attack speed. Because of MoC and Resolve, I did not need the extra damage reduction from Dashing Strike.
With this build I have better survivability and do more damage.
After making these changes I cleared 93 on the first try. I died once but that was because I had one of those floors where you step out and there's like 50 trash mobs and 2 elite packs right in front of the entrance. I got stuck in a corner with AoE all around me lol.
Anyway, I hope you enjoy my variant. There is a lot of synergy with this build even though it's just a few small tweaks it makes all the difference. I'm sure you'll find it a lot easier to push with this build being less squishy and at the same time maintaining dps.
Give it a shot and let me know what you think via comments on the build page. Thanks!