I kinda have 2 categories:
Stuff that's unique. Sure you can call it gimmicks, but it gets boring if every map is just redoing whats already been done.
Jumps with fast free flowing stuff: whether its easy (i.e. chained together -> can also get hard if its lots of chained stuff) or its a big payoff for say nailing a speedshot/edgeshot/sync etc.
Dislike: any button jump that demoman can't avoid/skip. Use the class filter, don't be a button asshole.