I've seen a few crawler setups that run the 18th castle controllers - Mamba 25, sidewinder micro, mamba micro pro. I'm pretty sure they all have the same programming options as their 1/10th scale brothers.
The Mamba 25 does use the Castle Link and has options for drag brake, punch control, timing, and throttle curves like the bigger controlers. Its going to be limited on the amount of power it can handle, but it is tunable. I don't have the other mini controllers so I'm not sure about their options.