Persoanlly I was hoping for a Combine vs Resistance objective/classes based MP
GAH! ANYTHING BUT ANOTHER OBJECTIVE/CLASS BASED MOD! How many do we need? I play Enemy Territory primarily, and after that... whee more class based teamplay mods! Don't forget about the squad based tactical shooter mods! OH BOY.
For the record, I still play QuakeWorld DM regularly, even though the extreme hardcore players are left, and I end up getting beaten down miserably. I really don't think any mod can top what ET achieved - still not sick of the 6 maps after playing several times a week since release.
Kudos to Valve, this should be REALLY fun, with a bunch of new strategies popping up thanks to the use of physics and the gravity gun.