Came up with this alternative list as well. The downside with it however, is that I lose the really nice benefit of the flayed skull obsession, but I do gain 10 mandrakes and I'm not taking a HQ simply as a tax. Also changes the dissie Ravagers to lance Ravagers as I believe the lances benefit more from the rerolls. Again, I might consider spending extra CP to kit out my expendable Archons for CC. Anyways, here's the list.
Brigade detachment- Blackheart +9 CP
HQ
x2 Archon
-Aggy
-Blast pistol
total:168
Archon (warlord)
-Aggy
-artefact: writ of living muse
-trait: labrynthine cunning
total:74
Troops
x4 5 Kabalites
-Blaster
-Venom
total:448
x2 5 Kabalites
-Blaster
-dissie raider
total:254
Elites
x2 5 Mandrakes
total: 160
10 mandrakes
Total:160
Fast attack
x2 5 Scourges
-4 Blasters
total: 256
5 Scourges
total:60
Heavy support
x3 DL Ravagers
total:420
Total CP: 12
Total: 2000