Even if this type of build doesn’t cut it at the OP levels, it seems like it might be stupidly good for leveling up. You probably can’t really rely on Recompense until near the end of NVHM (unless you get lucky with a Rebounding Warder com drop), but once you have the Harmony tree backbone it’s just a matter of filling out Cataclysm and grabbing Helios, Blight Phoenix, etc.
You could even grab Backdraft, get Ward in Motion, and wear a speedy Tediore shield for an extra buffer. If they’re only hurting you enough to drop your shield, they still eat the Backdraft (while giving you time to heal). If Backdraft worked with a Rough Rider it would be even more ridiculous.
My Maya isn’t high enough to try it yet, but this might actually be the one place that the Chulain would be worth using (it slags you while equipped, which should increase the bounce-back damage?)