also, where is your phantasm support gem?
6link melee zombies and 6link melee skeletons
Double melee makes them block eithother and make them function for 150% instead of 200%
would make skeletons become skeleton mages, and link gmp-phantasm to it, spell echo
makes your zombies hit harder, since agro is there sooner
cwdt-flash offering-desecrate
i like to exuip heartbound loop, 350damage taken when minion die, to trigger cwdt gems
then you can use agression cwdt gems, like SrS or arc or blade vortex