T&T's problems are not beacuse of our foreign-based players, most if whom are our best players. Look around the football world and you'll notice the many teams whose players operate away from home. We were just beaten by the USA, a team which has probably as many players playing in Europe as we do.
Off the top of my head I could name, Brazil, Argentina, Nigeria, France, Holland as countries which have large numbers of foreign-based players, and there are dozens more who have their players arrive a week or less before a match. You yourself named Cameroon and Senegal.
Our problems go much deeper than team chemistry.