Despite sharing the same birthday date going the full on Angus Young on stage isn't a part of my guitar playing style, so straplocks are low on my priority list.
As for switches and jacks, I find they generally fall in the same boat as pots, though exceptions are surprisingly frequent. I bought a brand new Gibson LP and the selector switch in it failed after only 6 months. It was replaced with a Switchcraft item under warranty and in the intervening years I've had nil problems since. By the same token the 3 way switch that was fitted to my '70's era Strat copy has never given any problems despite the seriously harsh treatment I gave it way back then as a teenager.