Nerf is probably more likely.
Not exactly happy with the M6 changes, as it seems like a kneejerk reaction to all the "vets" whining about how the set wasn't involved. Why that was the case, hatred regen, hasn't at all been addressed with the new change. Instead, it's basically any other old build, but now with the tedium of having to lay sentries first. Some are being blinded by the spiky nature of buffed sentries casting, but it's otherwise a mix of not considering actual DoT with other changes to GRs making people think they're way so much stronger. And to be honest, I expect Blizz to further nerf the current PTR iteration because some are also whining about that.
I really wish I didn't pick the class seems so content in nerfing any time it shows signs of power. It started with smoke screen, then attack speed nerfs, nether tentacles getting neutered, a perpetual under-tuning of so many other skills, nevermind the earlier mentioned resource issue that has people clinging to things like Reaper Wraps, Blood Vengeance, or old-Prep. The fact Blizz is attaching big damage boosts to the sets should also be indicative of how lacking the vanilla skills actually are if that's what we're needing to actually compete with others. Though, all this gets lost in the fray because, "Waaah, tower defense!"
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