Squads add another dimension to the game. If anything, the squad you choose tells the community a lot about who you are - who your friends are, and your reputation, which seems to be off to a great start from reading above.
I suggest, Pmoon, that you do some homework on squads as to build on that good reputation you have.
Do not join any squad accepting any and all pilots. That's a
big red flag to drama and a tainted reputations. Also, don't accept any offers just cause someone offered. Seek the one you want, and impress them.
Finally, ask yourself if you want to belong to a larger squad or a smaller one. The NLRs are committed to staying fairly small, but some seek tons of new talent and growth - that's probably the biggest difference between squads. A few seem to want to cause nothin' but trouble - like those Misfits

A bunch of no-good, good-for-nothin', bullies.

J/K