Love it, now try getting 5 people to work together like this in every-day matches :P Thats the goal.
You guys play too much solo queue.... That's not really a lot of teamwork in there. Nami just does her job to cc the team and help yi get kills. I mean, that's just what supports are supposed to do and there's no hard work playing yi and getting kills so...
True teamwork is far better from this
I'm sure that this is very impressive in gold but I wouldn't call this "true teamwork". Yi and Nami didn't really play off each other, they just both did their jobs. Nami CCed and healed while Yi was putting out DPS.