So far, the servers that I have been to have been laggy and unstable. Few have upgraded anyway, I could only get 90 TFC servers. Scoreboard change is nice, but some people got stuck on the scoreboard and had to restart HL, D'oh!
But, eh..whatever. The VoiceCom feels like a public beta for TF2, but it will make all the super-cool CS clans happy, now they can bitch and whine out loud. CS is a dumping ground for TF2 stuff, but that's a different thread altogether.