Moscovian:
Yeah, I was thinking all around (it's meant to be a giant psionic amplifier rather than a conventional gun, sort of had the image of the eye of sauron when making it
) but if there's any real balance issues with it being all-round it can be switched to forward arc or something?
Bear in mind that we were talking at some point about making the Ob Fortress just for Ordo Malleus, the Black Citadel just for Ordo Xenos and the Basilica just for Ordo H.
Frogbear:
The points values for some of the units might be a smidge high but I think they're reasonable. It's hard to point them because they're small and very vulnerable, but super-killy. Glass hammers, even moreso than regular astartes. But actually I think your changes would really make them better, not worse (the problem with broken GKs is that they tend to not rally!)
The shrouding protects them from long range fire, artillery and aircraft, which really are an issue unless they're mech'd up in LRs. It however, gives an incentive to use cover against short ranged enemies (if it's just cover all the time, why use cover?), and doesn't make GKs in cover unkillable (-2 to hit is pretty brutal). It's a perk, not a crutch. That said, I would consider moving it to 30cm (i.e. assault distance!).
I'll look back again at the Fearless vehicle issue. However, I don't see any need to make them non-Fearless, either balance wise or from fluff perspective. I also didn't like that some armies got Fearless removed from their vehicles (I still think the EC should be Fearless, for example
). Grey Knights are Fearless and I haven't found any major issues with this, I think making their vehicles non-Fearless will leave a major weakness to mechanised knight. But then, I tend to run mine teleporting or thunderhawking (got some LRs but never painted them). At the risk of sounding like a broken record, lets try out the formation and see if the usual "Fearless" issues apply (again, TSKNF makes it less of a problem).