I dropped the kff, because death skulls have a 6+. My 1500 point list is a miss match of stuff. It's
Warboss killa klaw/rokkit
Big mek suppa shokk gun
30 boyz (pk/rokkit nob)
5x 10 grots
2x mek with kmb
1x painboy (with mob of boyz)
Battlewagon, 2x BS, Deff rolla
two or three deff dreads with 2x saw/kmb (can't remember if 2 or 3)
3x smasha guns
1x shokk jump
Brigade, minus 1 cp for warphead, 1 cp for extra gubbins, 1cp for dread waagh.
Its not a hyper optimized list by any means, but its raw damage output if you roll well is borderline ridiculous.
Painboy heals characters and fnp's the group of boyz. With a 6++ and a 6+++, it takes some doing to actually whittle down the mob, so i usually can bring them back for 3 cp. Dreads usually walk because they do more damage shooting then in CC. Meks with kmbs in the BW with a unit of grots for mobile dakka/objectiving.