Yeah, I've got 10.2 server up and running... haven't used NetBoot/NetInstall, though, and probably won't.
A word of caution: maybe this was the case in 10.1, too, but it stung me earlier: the OS installs sendmail, but not /usr/bin/m4, which is needed for configuring sendmail. You'll need to install the Developer Tools on your server for that.
Does Jaguar Server now support user/group quota??
Yup. It's in Workgroup Manager.