Any ideas on the below?

Pestilence + Casey + Torso Mod + DF Recruit (175 + 50 + 9 + 15 = 249)
CNC Vixen + Valenti + IT (117 + 27 + 23 = 167)
2x SC Sylphs (26 * 2 = 52)
The Scorchers (26)
3x SC CBA (17 * 3 = 51)
SC Fenrir BA 15
DF SC SA 40

600 Exactly

Any ideas?

I'm not a fan of the Undead Mechs in 600-point play. In this army, I just don't see Pestilence dealing out enough damage to get many counters - and without counters, that 50-point pilot is wasted.

I like the range idea - 16 from the Vixen and 18 from the Gravedigger. But you need more heavy-hitters in there. The Vixen will be weak against infantry, and the Gravedigger can only deal out 3 damage max.

Agreed. And pestulence's streaks go to waste.

I like one of these two armies:

600 point Situational Alliance
Cynosure Catapult
DeJesus, Alberto (DF recruit)
Anti-personnel
NC Vixen
Vanek, Matt Zxqueb
Improved Targetting
DI Towed AA Artillery
Trike Squad
Trike Squad
Sylph Battle Armor
Sylph Battle Armor

or

600 point Situational Alliance
Rosse's Revenge Cave Lion
Khalsa, Avanishi (DF recruit)
RISC Hyperlaser
Sylph Battle Armor
Sylph Battle Armor
Bartelby Thunder Fox
Yager, Margaret (SC recruit)
Anti-Personnel

Both give you more firepower, and the ability to trash infantry. Not much in the way of support, but its a 600 point build afterall.

I like the second army... posted by amishes.

Pestilence seems like a very odd mech on its own, the lance needs its lance mates or its way over priced. 250 points for a mech putting out 3 damage (Someone said that i dont know what it actually deals off hand). Very high priced for doing almost nothing.

I like using alternative firing mode with pestilence. It means it can do 5 damage without killing anything. Too bad its on the shorter range weap. Thats about the only way I would use it without other lance members.

I ws contimplating wacking on double rate for meds insteda of torso mod and dropping an inf...I like some of the aboive ideas, already gone through my head as well ;)