Let melee-only classes take two Move for one action.
Two total move in one turn feels okay for the ranged classes, but for the classes that need to close to melee, it's utterly glacial. The end result is that a ranged class is more fun by far, because they get to act a lot more often.
Of the three melee classes, Rogue has easy access to Dash, Vanguards get Charge, and Beacons use reach weapons by default. That means that each of those classes can get an attack in against an enemy even with two squares of intervening space. In my experience, it's very seldom that you can't start slicing and dicing on the second turn, which seems about right to me.
Amanda Schuller commented
I have played a Rogue with the Dash ability, and it would help for every melee class to have access to it, yes.
AdminDerek (Manager, 10x10 Room) commented
Have you tried playing a Rogue with the Dash ability? That grants the ability to move two squares with a minor action. In addition, we're planning to make Dash an option for any character with Agility 6 in the future; it'll be one of the abilities you can select when you gain a level.
We've also considered increasing the baseline number of squares you get with any move ability. That has some larger implications for how combat plays out, however.