In 2004 this ended up being a big issue after a match between 469 (Los Guerillas) and 93 (New Apple Corps) in a Galileo semifinal. The link here is the moderated thread that was created after Nationals to discuss the issue.
To state my point as clearly as possible:
If you have anything on your robot that another robot can get tangled on don't be surprised if it happens and they damage your robot.
To avoid this problem in 2004 we used plastic window sreen material because it was see through and the holes are so small you have a negligible chance of getting caught on them. A material more like that would be better.
http://www.chiefdelphi.com/forums/sh...t=entanglement