The way I'd work with non-violent site actions would be... um... I think I'd increase the juice gains from the relatively safe machinery smashing and cage breaking, but keep it capped at 200. Terrorism is pretty hardcore already, maybe it should give out more than the current 100 juice. Prison guards are fairly easy kills, but now that the prison is multi-level (see trunk), rescuing Liberals from the death row using brute force will almost certainly result in a SWAT situation before the squad makes it out. I'd still increase the juice gains from prison busting. Jury tampering, cable/AM takeovers should always result in *some* juice, in my opinion. Maybe 50 if juice <500 and 25, 10 or something like that afterwards.
EDIT: Oh yeah, and I'm not sure how much juice haxxoring the supercomputer gives, because I never managed to do it. It's nearly impossible - a site filled with the toughest NPCs (agents, of course) and dogs with extra-good disguise detection. Doors cause alarms if bashed. Any alarm will cause the computer to go to safe mode. Computer itself requires epic skills. Getting to the computer is hard, getting to the files is a luxury, and getting out with stolen files is almost epic and will infuriate the CIA. This should give a LOT of juice.
MORE EDIT: Oh, and almost forgot, I would like if the playstyles weren't so divided between violent/non-violent. If someone comes up with a good way to handle stealth combat etc, I'm in.