I'm not sure if this is the best use of my points. I like the idea of Purgation squads. I know people say Purifiers have cheaper psycannons, but you need to get 10 of them to get those four psycannons in one squad, whereas a Purgation squad can have 4 of your 5 with Psycannons. Anyway, C and C welcome.
Grand Master XXX pts
Purifier squad - 2 incinerators, 2 halberds and 1 sword. DT is Razorback with heavy flamer and Psyflame ammo 199pts
Ven Dread - Psifleman upgrades 195pts
10 man GKSS - 2 swords, the rest halberds, Psybolt ammo 260pts
5 man GKSS - 2 swords and 3 halberds. DT is Razorback with Las/Plas 195pts
Storm Raven with Plasma Cannons and Typhoon Missiles 230pts
2 Purgation Squads. 4 Psycannons and a sword in each. Both have DT of Razorback with Psybolt ammo 460pts in total
Psifleman Dread 135pts
That makes 1849. I like the idea of the Pruifiers arriving in something that will flame the living daylights out of an opponent, then they get out, burn them with incinerators, then cleanse them with flames.
The ten man GKSS will go in the SR with the GM (although in missions requiring objectives, I may combat squad them or the GM can make more units scoring). The dreads will provide backup fire for the purgation squads. If none of these guys move, that's 32 stength 7 shots and 8 strength 8 shots per round. (I used to have a list that had 3 Purgation squads and 6 terminators carrying psycannons - that was fun but not very mobile and I feel I need S8 shots in my list).
One slight modification would be to change the GKSS razorback to a regular Razorback with psybolt ammo leaving enough points for 2 psycannons in the ten man squad and 1 in the 5 man squad.
Seem ok to you?