The only thing I've found that you shouldn't delete is Facebook for Sense and Friendstream. For whatever reason they have some deep roots into the OS and getting rid of them can cause some serious issues. The rest, well its open season on bloatware.
As far as freeze, rename, or delete...I've always been a delete kind of guy. If you're rooted, and I know you are, I usually make a nandroid after I've got everything set up and running...after the nandroid you can feel free to delete away...if something goes wonky just restore and don't delete whatever it was you deleted to cause the problem.
A word about all these nandroids. Don't know if anyone has given you this tip but they take up a lot of room. I usually keep no more than 3 nandroids of various ROMs on my SD card...any other nandroid of a ROM i really liked I drag to my computer and name it something so I know exactly what it is. That way it's not taking up space but if I need it or just want it I can stick it back on my SD and then restore from there. In fact I think I still have my stock Froyo from immediatly after I rooted...and backups of Virtuous, and several other ROMs that I don't use any more.