I have found the grapple hook in QuakeLive! and have applied it with the PQL physics locally in CTF mode. Demonstration of PQL CTF with grapple 4 v 1 on Spider Crossings:

http://youtu.be/Lwr3ZpPZVzI

Would this convert you, or bring you out of retirement? I love it personally, but I am diehard QWCTF Physics and Grapple lover :)