As far as switching side, thats personal preference.
I tend to like working with the same crew, sometimes you rarely need to chat, everyone knows what the others will do. Same thing with concert crews. Throw one odd ball in a seasoned crew, they don’t move or think like the rest, things and timeline is not moving right. i like my regular crew, we’re all in tune with each other. This is why squads have their positives. My crew in concerts, we pull off miracles every day because we are in tune with each other. I don’t have to ask how someone is using our time, I know what they are going to do. So I get it.
Solo has its own benefits too, go to other sides, meet other players, build the respect and general comradery. Events are great for humanizing each other as not just the enemy. I may snivel on 200 once in a while, but I know they are good people just playing the best they can.
Just IMHO