I suppose whether most people enjoy an anime or not dictates whether it's "good" and well received, so if the masses don't appreciate huge amounts of character death, then I suppose Akame ga Kill exclamation point will never be a good anime.
I on the other hand, loved it to bits, half because of all the brutal, BRUTAL extinction of everyone I'd come to love.
If I'm halfway through an anime and my favourite character dies, then its not in my nature to give up enjoying it if there's still something left that's interesting.
I'll feel like I've been punched in the heart, obviously, but its that gritty everybody-is-dying-but-somehow-we-still-have-to-win attitude that kept me interested and hopeful in/for Night Raid and what ultimately made me feel happy for Najenda and Akame in the end.
I, like a few other commenters believe that the deaths of important characters isn't necessarily a bad thing, as long as their death is worthwhile and makes their existence significant or at the very least entertaining.
Anyway, I loved it regardless. Just happy I got to see Henry the Eighth's equally ravenous cousin get mangled by Leone.