A different combat system.
Necromunda is just NOT right for the amount of models we get down at once.
I'm waiting for Mort to throw these so-called Frag rules at me, but until then I am pondering simply hybridising either the 40k Assault system or perhaps a simpler one, using something like the Hero quest dice..
Everything else is pretty much perfect for the game, but fighting with necro' rules against 4+ Z's at once takes so bloody long.
Mankinds first mistake; Questioning why those around him, are dying.