good idea in theory
Personally I have never been associated with a team and have played fulltime solo for several years, but have spoken extensively with several people that have and have decided that solo is the way for me to continue to go.
If you are talking about team play such as in the movies and books, be aware that the casinos are well aware of this big player approach. Uston used it in atlantic city almost 30 years ago and others in vegas even before that. It certainly is nothing new. many casinos now just impliment "no mid shoe entry" to eliminate such.
If you are talking about several players pooling their resourses to create a larger bankroll enabling them to wager at a higher level than each could on his own, well then this method "in theory" can be beneficial. The problems come when one or more members' results fall below expectation. The results can be disasterous. Even a lifelong friend, who you would truely trust with your life, can come under suspision in such circumstances. You may think that you wouldn't react that way, but when it happens, you most likely will. It is just the way human beings work and unforetunately, it is in each and every one of us.
So as I said, my decision a while back was to keep going alone, then you have noone to question except your own ability. I am still playing at a much lower level than I would like and still building my bankroll, but for me it was the way to go.
I anixiously await the advise and comments from some of the others who have more experience with team play.