I mean, I get the idea of having a killnasty melee block, implacable and unstoppable. These are just... way expensive units that are pretty damn fragile and not at all mobile, is all. Using the new minis as Termis with, say, dual lightning claws (and maybe a chainfist or two thrown in) would cost about as much but be waaaay more survivable, to say nothing of able to DS where you want rather than stuck footslogging up the board. And the DP can DS too!
Hmm. What about this then;
5 x Red Butchers (inc/Devoured) - 295pts
-2 x Lightning Claw (Pairs)
-3 x Twin Power Axes
-Thunder Hammer (Dev)
These guys would be WS5, BS2, S4, T4, W2, A2 (Dev 3), LD 8 (Dev 9), Sv 2+. They have Cataphractii-pattern armor (Sv 4++ and Slow and Purposeful), Fearless, Hatred (Everything), Feel no Pain (6+), and Unstoppable Charge (Re-roll failed charges).
Do they sound better??
Edit: I'm actually starting to lean away from this after some thought. I think perhaps my points could be better spent on Slaaneshi Daemons in my CSM force.