They would have to totally revamp it so I agree that it won't happen.
I am not a fan of the current system either. In real life, if you have poor baserunners, the manager isn't going to have those poor base runners attempting to steal 20+ times a season. In HBD, that's what happens when you up your team manager base stealing though -- those poor baserunners with a 380 OBP run into outs, but those speedy great baserunners who only get on base at a 300 clip don't get as many chances. In real life, Billy Hamilton attempts 60+ bags a season and it has no affect on Joey Votto.