I realized some people would want an option like that after I added it, but I don't believe I can add one in.Can we add a 5th option that says something to the effect of "yes and i'm torn" I have "upgraded" but i'm not sure if its an upgrade or not, some features are nice, some are very annoying.
I'm really liking Lion, I did a clean install and it feels like I have a brand new computer. All the gestures are great and theres a bunch of little tweaks that just make it that much better than SL. I'm getting a lot of use out of launchpad, haven't messed around with mission control much yet but I'll get to it.
If you do upgrade, do yourself a favor and do a clean install, its worth it