I agree with Hvar. Remove people who glitch, not a mechanic that aids gameplay. People who glitch get dealt with. Rappel is a great mod. You can't remove everything because someone finds a way to abuse it.
The money you get from it is so miniscule, it's nice to have it. Not everyones bank is capped. I've died with 20-50k on me plenty of times though, from missions. I think that's good enough for money circulation.