Is it just me or did blue get all the good exclusives. Red's seem to blow.
You must not be very good at the game then. Slain, Viking, Psychopath all have potential to be one of the top tier classes; Slain is probably the most versatile class in the game right now in terms of speed, damage output and effective range. Viking has high HP and an instant kill longboat ability. Psychopath is pretty much Firebug + Healer with a faster heal rate + auto regen. Rebel and Anna can be played like their vanilla counterparts and be very effective at close-mid range.

The user noted that Snare's mobility is exceptionally good for players who learn to aim upside-down, as most maps lack easy shooting spots.
Agh's happy sentry with team support is almost unstoppable. Iji is

expletive good at finishing guys off before they even have a chance to defend themselves with plasma cannon. Vein is insane in the right hands, and his bike away+sandwich combo makes him the best medcab-less solo class in the game.
I made a deliberate attempt at making all the team exclusive classes very overpowered. The reason the red classes may seem less good is because they were based off of each of my clan member's best vanilla classes, while all the blue classes were original (in the sense that they were based less on the vanilla roster).