Hermes and I are both going towards a track bike and doing some track racing. If you're doing mass start stuff it's a super condensed tactics class and I've found it's a fair bit smoother than crits in the lower cats because people can't jam on the brakes and tend to be circumspect on where they stick their nose.
Most race days run on an omnium format with 3 different events per class, if you do both the straight cat and the masters (either age or an age/cat if it's offered) you get 6 "races" to work on tactics plus the events often require thinking and strategy beyond just crossing the line first (points race, miss n out, snowball, Etc).
Additionally, all the other races unfold right in front of you so you can watch and learn from other racers.
I don't think it's an accident that a lot of the best current and former racers had a track background, from Zabel to Cav.