Hmm, yes, I like the new hit & fade.
But I'm not sure my opponents will be as pleased. "Are you kidding me? 41 attacks on the charge, and reroll failed to hit rolls? Never mind the reality of the situation.
And, of course, it's overkill against many squads out there. Guard, gretchin, gaunts, guardians, and similar units, but these squads will be 1/3 of the price as well.
The mechanic works, I agree, though I could wish there was a mechanic that more accurately portrayed pure skill, rather than an insane attack rate, but that was a digression.