[BrianG]

It's kinda difficult to use current limiting in BL. The only way to truly limit the current is to have the ESC "read" how much is being pulled and then reduce the throttle based on this reading. This is usually done by inserting some device inline with the power (shunt resistor or feedback coil), which would rob power no matter what. So, ESCs try to do this indirectly through some kind of "start power" setting or throttle curve programming (MM), or by selecting different grades of battery (Quark).