As mentioned, my 00 has RWABS also and I find it completely useless. It does nothing to help stop in slippery conditions. Maybe it helps to reduce stopping distance in dry, ideal conditions but definitely not in poor conditions. By the time the ABS kicks in for the rears, the front is already locked up and all steering capability is lost. It should have had the ABS on the front, allowing steering. I can control a slide from the rear as long as I have front steering.
IMO, I love ABS. All my cars but my first (a 79 Mustang) had it and I'm used to it. It does take some getting used to the weird pulsing feedback in the pedal when it kicks in, but that's just like anything. You have to get used to it and expect it. Every winter, I head to a big parking lot after a snow and kick in the ABS to "re-acclimate" myself to the feeling. The key to ABS is NOT to let off the pedal when it kicks in but just keep even pressure and let the system do the work.
So, is there a way to convert to 4WABS for our Ds?