Also, I was rethinking the Halligan and I think it currently it feels a bit more like a Dedicated Transport than a support vehicle. I like the new weapon profile idea, but I think it that while 12/11/10 armour is nice, the weapon just isn't useful enough. It's pretty hard to justify taking it over a fire support team with missile launcher or lascannon, or a castigator with a cheap squad with breaching charges (okay, cheaper, but the castigator is a bit more flexible). I think the Halligan could do with some transport capacity, and a bit more punch from the weapon to make it a more appealing prospect.
I think a good mix would be for ~80 points, it'd be a Repressor (profile and riot plough) with transport 6, and the Halligan missile launcher as Heavy 2, 24", S7, AP3, Melta, twin-linked for vehicle/building busting or Heavy 6, 24", S3, AP-, Pinning, Blind for messing up the enemy before your passengers assault. Maybe throw in the ability to take up to two Hunter Killer missiles to round of its support role. Not sure about fire-points, probably would reduce or drop them to leave it as the vanilla Repressor's thing, since the missile system would likely make it difficult to fire effectively.
This way the Castigator is the anti-infantry assault vehicle, and the Halligan is the anti-tough-stuff alternative; taking one of each plus a flexible trio of fire support teams would give you a force to reckon with
