You're right about teams.
I skirmish occasionally but it leaves me dissatisfied as you have a few mates who play as mini teams within a large team and then lots of lone wolves, plus people who just have no tactical awareness and run around a lot making lots of noise.
There are some very serious people out there who spend hundreds and hundreds of pounds on having authentic imported kit and treat milsims and training as deadly serious. Ive seen some just spend 1500 quid on a nightsight. Good luck to them, but its not my cup of tea.
I feel there has to be something in the middle - a compromise.
We've got the milsim coming up in September and theres got to be some mileage in dressing the part with easy to get hold of, reasonably priced kit and forming up early into small force fire teams, If people want to meet up earlier to train or talk tactics at distance, then that is all good. Somebody asked me if they could play a sniper and have a spotter. Sure, no problem, sort it out in your fireteam, Research, discuss, train. If you want to go on a course to improve your knowledge, thats great, but you can learn a lot by reading and training together.