Of all the changes, I think Rodeo is the most disappointing for me. I miss the classic cat-and-mouse between pilot and titan. I hate how it's fully scripted now; jump on, player does nothing while the game makes you grab a core, or drop a nade, and jump off. I'd love the old system back but I don't think they necessarily need to lose the new stuff. Got me thinking...
Rodeo a titan. You are on there until you jump off (or the pilot ejects, or it dies).
Just chill. You can ride around if you like.
Drop a titan on it if you can.
To shoot its brains out, pull your trigger. System is the same as classic TF.
To steal a battery, press your melee button. You can still ride around till you jump off, but nearby enemies will see you clear as day with the battery indicator.
To stuff a 'nade down its gullet, press the 'nade button. Don't forget to jump off!
Combo all of the above... Jump on, steal a battery, shoot its brains out a little, finish off with a 'nade, jump off.