As a player since WFB 6th edition - things are better than they ever used to be. Maybe except for FOMO, but it's on you, not on them so it's easy to ignore.
I'd welcome any better alternatives but so I have not found any.
I think it can be good. Costs quite a lot, but benefits greatly from Supa Sneaky and Dirty Tricks - can be deployed on the side of the enemy and tie one flank for a round or two. You can even smash faction terrain with him if you can get far enough.
Prophets have shorter range, and can't move before "shooting", but are just as swingy as Killbows. My Wurrgogs usually deal 6-7 mortals before killing themselves...
Remember guys that Darkkfoot's ability to ignore ward saves works against wounds and not mortal wounds.
Wardokks seem too good to be left the same, but man can dream 🙂
Sorry for double post, I have to idea how to edit my previous comment.
One more thing I wanted to say about arrowboyz ability in Bonegrinz (+1A). If we get this instead of additional attack for 15+ models that would allow for some MSU play with Bonesplitterz. Right now I have a big problem with only 4 reinforcement points in 2k game.