I do think the monster mash could be viable with all the flyers we now have Plus the chameleon skinks I do think that you can give the enemy so many targets to kill that you will get though If all the flyers vanguard I think that you should have all the anti war machine tools needs to tie up or destroy most gun line armies Imho
I'm taking 2 stegs and 2 bastiadons. Probably 6-8 ripperdons and 3 units of skrox. So a fair few montsters and monstrous stuff. Tetto'eko and a slan because they look cool on matching chairs Not so scared of cannon, more scared of BIG blocks of decent infantry.