In Voyager, every main cast member is wigged to some extent, even if just false sideburns. Except apparently the Doctor who grew his own pointy sideburns and was clearly not bewigged on top.
Robert Picardo talked about this on I think a podcast I listened to several years ago, so sadly I can’t link to the source as I don’t recall where it was.
There’s a quite long series of novels that follows on from DS9, starting with Avatar books one and two.
Later they intertwine with Next Gen, Voyager, and (briefly) Enterprise continuation novels too.
But that series was wrapped up a couple of years ago after Picard started, because the TV series contradicted the novels, and the publishers wanted to get back into sync.
I really enjoyed following along with the continued adventures of the ds9 crew.
It felt totally natural to me watching it first time round. It’s part of DS9’s thing to be about a group of people who stay in one place and have lives and relationships. And it’s part of DS9’s thing to throw in stuff and let it grow if it works.
It balances against the harsh darkness of the main storyline, and in a 26 episode series you can’t just bash out war after war after war episode - everyone needs a break.
Probably also helps that it’s likely cheaper than other stuff to produce and means they can save some budget for a space battle in another episode.