I actually use the second face there, thought it looked rather gruff, think it fits quite well!
But for me, I think the main thing the Arbites need are all feeling based. The Arbites (at least to me) feel very low impact. Outside of the Shock Mines (which just turn off the game, smite but the Arbitrator gets to keep playing the game, what fun…), most of what they do is like, numerically strong but visibly lack luster. The speakers have insanely small range, and don’t visibly do anything to the enemy despite giving your team a vast amount of stats (not like bubble visibly stopping bullets for instance). Castigator’s Stance makes you a walking terminator, but unlike other buffs of it’s type there’s no ‘mini game’ to play while you’re in it. You aren’t trying to manage your peril to keep it active as long as possible like Scriers, or trying to gun down all the specials and Elites in the area to keep it active like Executioners Stance, it’s just a thing that happens and then goes away when it’s done, which is like, fine, but that combined with there not even being an animation for it activating makes it feel like ‘cool, a buff appeared on the lower part of my bar (which sometimes isn’t even visible) and I can’t sprint but walk a bit faster, this is, neat, I guess?’. There’s no visual zoom in, there’s no ‘raising of the hands’ with a visual effect, just ‘screams, is now apparently doing something different than they where doing before’, and that just doesn’t feel all that great to me (likely also attributed to them having so many stats just shoved onto them that the stats the stance gives are hardly noticeable, even with them being ridiculously op).
And then the ‘Break the Line’ charge is just Zealot Charge but worse to me. Sure, you knock everything over, but as is the way in current day Darktide ‘the best CC is death’, and thanks to Invocation of Death being a thing both have basically the same CDR, but Zealots gives me attack speed while Break the Line just gives me a bit of damage and…impact…wow… Not to mention half of it’s ‘upgrades’ require you to hit elites/specialists/monstrosities, which like, yes the game spams a butt tone of those at you, but it makes it feel like ‘I gotta save this to hit a bunch of those types of enemies at once’, since you can’t get back to it quickly unless you do that, where as Zealot charge micro staggers everything (which is good enough) on top of criting everything so you can just use it against literally everything and not feel bad about it what so ever. Break the Line also needs an upgrade to charge forward…why?
Overall, again, besides the busted Shock Mine, everything else the Arbitrator does just feels low impact. I’m not shouting everything to the ground while making my team immortal, I’m not taunting everything to me while making myself immortal (only doing the second half). I’m largely just a stat stick with a really cool dog, which to be fair the dog IS really cool and super potent and fun, just having an extra thing that’s always killing stuff and giving you buffs for it is really good. But it’s just like, the lack of ‘high powered things’ on him is really felt. They don’t have DS/Knife, they have Boltgun/Bolt pistol and Revolver but so does everyone else, and their melee’s as you say could really use a Chain Axe to ‘round them out’ cause they just don’t have anything that’s SUPER good at armor pen for their melees. They very much feel like the ‘support CC class’, but Ogryns do that already while also killing everything because batter exists. So I feel it would be nice to help them ‘feel good’ at least, verses just feeling like a stat stick that points at stuff for their dogs to kill.
Their unique weapons/the riot shield feel really good though, but like, that could literally be placed on the Veteran and I’d instantly swap to them in a heartbeat. I feel, which is surprising to say given their numbers advantage, they just need ‘a bit more’. Not numbers by any means, but just, more to do, if that makes sense. Make the speakers visibly slow down enemies in it’s radius/make that ‘50% increase between attacks’ result in an animation where the enemy tries to cover it’s ears for that duration or something, while making it’s radius bigger (those are some pretty sh!ty speakers to barely cover like 80% of the diameter of a Psyker bubble, I honestly expected the radius of these things to be room sized with how they where described to use before release. I get THAT would be broken, but like, give it a 15m radius or something like come on XD). Make Castigator’s just have more ‘flare’ to it’s presentation (some form of like visual overlay/maybe give it the highlight effect of Execution Order on all appropriate targets, to give like, SOME synergy to it?), and maybe make it 15 seconds instead of 10 while letting you cancel it with sprint/the active ability again so you can actively feel it’s effects, or give the Arbite ‘Attention Seeker’ (taunt on push) while it’s active to again allow for some form of ‘while I’m functionally immortal let me actually be able to do something to help my team with it’ effect. And then honestly just let Targeted Brutality trigger on every stagger, not just big enemy stagger. It’s already just a ragdoll/mobility tool, why not let the ‘impact’ class do said impacting at an actually decent rate against the hordes it’s supposed to be suppressing?
Think that’s mainly it for me though, talent wise the Arbitrator is a busted monster, they just ‘feel’ low impact, at least to me. Will see how that feeling develops as I play them more/get to 100 missions cleared with them, but for right now they feel super ‘stat heavy’ with low synergies outside of stagger, and I feel that ‘feels fine but I’m very welmed’.