Autosalon was really cool when i was 18yo.....its just not my scene anymore. I'm in no way a conservative old fart, anyone that has seen my cars can vouch for that.
I must say that i am a little bias as i have been to Tokyo Autosalon, but that aside i can see all the cars in sydney autosalon for free on a friday night on george st.
As for club events u can't go wrong with more cruises and track days. Charity cruises always pull a good crowd as does show an shine. And its a great way to informally meet new members.