Ok, so I always hate weighing in on something without having tried it first. I'm still waiting on my Grey Knights models to arrive so haven't actually had a game with them yet. But, I've played EA before, and played Grey Knights in 40K for years, and a couple of things in the list stand out to me as odd.
Why a CC of 4+ and FF of 3+? The thing that really separates Grey Knights from regular Astartes is that everyone has a force weapon and access to the Hammerhand ability. They're decent in the shooting phase with all those psycannons, but they absolutely wreck face in close combat. Grey Knight strike squads, purifiers and interceptors all hit just as hard as the terminators.
So why is their FF ability better than their CC ability? I understand that the Interceptors have an extra attack to represent their choppiness, but the strike squads are just as choppy and have the exact same weapons and abilities, but no extra attack?
Meanwhile, a Grey Knights shooting is really no more dangerous than a regular marine. Obviously the squads with more psycannon are more dangerous, but the rules cover that by rolling more dice.
So I would suggest that Interceptor and Strike formations get a combat boost. Either an Extra Attack, Macro Weapons, a boost to CC 3+, or some combination of the three. At the very least, Strike Squads and Interceptors should have the same combat ability. Ideally, they should have a comparable combat ability to the Terminators, since in the 40K version of the list the units have the same weapons, weapon skill and access to the Hammerhand ability. And at the same time, these squads should have their FF reduced to 4+, and obviously a points adjustment as needed
In fact I'd even suggest that each Grey Knight formation might get to re-roll once dice in engagements, either firefight or close combat, to represent their psychic abilities. In the 40K version of the game, putting regular marines into combat with strike squads is an elaborate form of suicide for the tac marines. The Strikes ignore their armour, and wound on a 2+ while the tac marines wound on 4's and don't ignore armour. CC engagements for the Grey Knights in 40K should be where they perform the best, and perform better than a lot of other armies.
I think this would serve to address a couple of issues. It would give Grey Knights a distinct focus that separates them from other Astartes. It also allows them to replicate their background on the tabletop. It would also make them more expensive, and so they would feel more like an elite strike force on the tabletop as you'd have less models and have to be more careful with them.
Anyway, like I said I'm new to the whole 'Grey Knights in Epic' thing so don't be afraid to tell me I'm an idiot. I'm not asking for the Grey Knights to be the best at everything. I think their drawbacks should be long ranged firepower, access to armour and low numbers. Their strengths should be engagements, and specifically close combat and at the moment it doesn't feel that way, IMHO.
