Number 3 is definitely coming in 10.6.5, we're already seeing some of the work in a separate graphic drivers update that Apple seeded and has twice been updated.
Number 5 isn't really a fix, but a new feature. Apple did add TRIM/SSD status in the System Profiler starting in 10.6.4. They wouldn't do that if they don't plan to add TRIM support. So it's coming, the question is which update will it be in.
Number 4 is the only thing I care the most about as I just got the i7 MBP, so I agree. It might be already fixed via the graphic drivers update.
Number 2 could be fixed if Apple just update to the latest build, they're still using the same build from years ago.