I tend to agree that with Tito and Tata our offensive plan has been pretty much "help Messi score many goals". That plan worked for Tito, because Messi was in crazy form for a large part of that season, until he got that tear and everything fell apart. Martino didn't have that luck, and although it seems that he wanted to make some changes, he didn't had the guts to follow them through and ended up being dominated by the locker room.
Everything seems to suggest a Messi-dependencia, but not one that caused by our lack of talent in offense, but a deliberate tactic that makes us look especially for Messi on the field and give the ball to him. We stopped being a team and playing as a team every since Pep left.
Neymar and Alexis are too good to sit in Messi's shadow. We need a real trio, not only in theory, but also in practice. Not Messi and the other two guys.