Apart from the Campaign I really want to go for:
Hoshi's Crazy Drops
again and maybe with a few Clan friends this could be more fun.
What is Hoshi's Crazy Drops:
We plan a date and then we do a "theme" drop with "weird but possible tactics".
Crazy Swarm: All pilots drop in light fast mechs (Locust, Arctic Cheetah) with SMPL and Zerg enemy assaults.
Hunchy Madness: Hunchback Dakka only drop (of course IS and Clan Hunchys qualify)
Dakka Dakar: The more autocannons the better, max weight possible for drop
etc. etc. etc.