Not true about tracks, I have been cutting 3 and 4 camera sequences in exactly the same way as I did in FCP 6 before multicam, laying one clip above the others and then razoring when I need to cut between shots. Please post more about how you are trying to work with it.
If you post your system specs someone may be able to help with the crashes. I’m getting a few each day, but they never lock up the system and they have so far not lost any work.
Also if you just want to vent then the main FCPX forum is very good for discussions of that type
Steve Connor
Adrenalin Television
Have you tried “Search Posts”? Enlightenment may be there.