Just re-read the entire thread, and here's a summary of the apparent benefits and problems related to the update:
Benefits:
More responsive screen
Better WiFi
Grounding issue fixed
EAS security tweaks
Possibly better 4G performance
Better battery life (only for facebook users?)
Problems:
No unRevoked; I have a number of programs that rely on this.
No Free Tethering
No ShootMe (not really a big deal for me, but....)
No Titanium backup (root capabilities)
Lost stock Android Wallpapers
No way to turn off Sense (not a big deal to me, but...)
Possible issue with text entry in texting app (does this affect Handcent?)
Possible Accelerometer problem
Possible Skype problem
Risk of bricking phone with no replacements available.
I'm definitely holding of on this update for a while. The following issues didn't affect me:
WiFi (mine seems fine in the few places I can use it)
Screen Grounding (never had an issue)
Battery (I get 12 - 15 hours per charge, and don't use facebook anyway)
EAS (mine works fine, as my company doesn't have a security policy)