every person has their own way. mine is similar to what you've stated.
with kegs, when i first get them, i do an overnight pbw soak, and clean all the posts, poppets, gaskets, and replace the gaskets usually, depending on condition and how they smell. gaskets are cheap, why ruin a batch of beer due to laziness and being too cheap with gaskets?
after i clean it, i rinse it out, and turn it upside down to dry. i will also do an overnight pressure test. if i lose pressure, i find the leak and fix it.
i let the keg completely dry, checking after a few days. once it is dry to my satisfaction, i pressurize it with maybe 15-20 psi, and leave it till i need to use it.
when i need to use it, i pull up on the manual pressure relief valve, and if i don't hear any pressure escaping, i know i have a leak, and i need to find it before i can use that keg again.
the main reason why i do things like this is because i have so many kegs (almost 40 now), so i can't remember things specifically about each keg. i store all my empty like this, and use it as an easy way to identify leaks before they become catastrophic. i try to fix everything when i first get a keg, but do this as a backup to ensure i don't lose any beer/wine/mead/cider. the wine and mead in particular would be very expensive if the keg were to leak out or something like that.
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