I agree in there being more time controls. In fact, I would prefer a bullet mode!
Add more time controls

More time controls means longer waiting times to start a game since you need to find 4 players with the same time setting. I definitely think there should be more time controls eventually, but not right now.

Agreed, over time, more controls will probably be implemented but right now, one time control is for the best as that will be easier to get more games rolling

Would love to add more time controls, but we will first need to have a large enough pool so that games can be found quickly

It really makes a mess of the rating system too at this point. I think the 4/5 format is good. I think 4/2or3 would be better, but we would all have our preference.
It would be lovely if there were more time controls other than blitz. Even better if you could put in your own custom time. Blitz is nice, but I find it hard to appreciate the strategical beauty and tactics in the game.