Why not just keep it at .3%? Volumes have been low with 0% and are unlikely to do better when fees go form 0 to .3 and then double to 0.6 or .65 or whatever.
If the market stays as stable as it is there will be no incentive for people to trade since any profits will go to fees. If it stays at 14 one needs nearly a .2 change to break even. But then again it's not like 0% fees are helping anyone too much either.