The thing is, can you consistently pick different locks while in potentially difficult situations in a reasonable time. While yes lock picking is simple in concept, actual use with new locks is a lot more difficult.
Locks only keep honest men out, is true for most house locks but the difficulty shoots up very quickly when they aren’t cheap locks. When they are machines better, or install security pins… well that’s why locksmiths are well paid.
Lock picking by itself would be a lackluster skill, because none of those complexities are shown to the player. A skill like security is what I thought would work, i had thought larceny or burglary.
From opening locks, to popping open car doors, seeing alarm systems and bypassing them and so on. I think locks could be a interesting game play choice, you can bash your way in but it makes a lot of noise, but if skilled enough you can pass through without penalty.
Electronic locks are just regular locks controlled differently, knowing the lock design for example could make it much faster and easier to literally break through.