features or details about your favorite maps?

I've been dabbling with map making and have made a few just for fun. would like to make a more serious and competitive S&D style map.I was wondering if anyone had anything to share about their favorite sections of different maps. Specifically certain areas or layoutsand orobjects/obstacles that you find fun or tactically interesting. hoping to get a small list to go over and maybe find some inspiration.

Favorite map is downtown gmod no question
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I like ps2 it is a good map I know all its places in competitive it is epic the map what happens is that it is still difficult

For me, best map is when you can throw tricky smokes/flashes above obstacles or buildings. It makes match more tactical instead of pure deathwatch.