A team centered game should revolve around the collective skill of every team members...
...and not on the skill of the worst member. It just makes the game feel like extremely pressurising for the least skilled players, and frustrating for the better ones since it feels like they have no impact on the game's outcome. Add in the very faulty matchmaking, and it is no wonder why everything in the game isn't getting any better player experience-wise, even after "balancing".
That is all