1x. Back in the day it was the preserve of low end bikes. Pressed tin chainsets that somehow managed to weigh a ton despite their fragility.
I wanted a 10 speed (2x5) bine for a birthday present and my parents could only afford a 5 speed.
Now I quite like the 1x.
I'd also add rigid forks into the mix. When suspension became a thing, you had to have it. My first were Rockshox quadra 10s, then I 5hink 20s (yellow). Loved the upgrade.
I still like suspension, but also rekindled the joy,, simplicity and direct feel of a rigid fork.
+1 for amber walls too. Hated the look, old fogie tyres again on bsos like appollos and emelles, couldn't wait to replace with black walls. Now I've got many tan walls and liking the look.
Last up, flat pedals. Waited a very long time before moving to sods, was an instant convert and wondered why I resisted for so long. After 4 knee operations, I'm fairly sure some were a result of the unclipping motion from spds, I went back to flats and proper flat shoes. Feels like I'm clipped in but I'm not.