While what you are saying is valid, whether you like it or not as a team we are alot more dangerous when gervinho is in the team. He is extremely frustrating to watch but we do get in to dangerous positions when he is in the team (more so than walcott imo). The dissappointing thing is that he very often picks the wrong pass, however yesterday everyone will go on about his missed chance but he did set wilshere up with a good chance and his runs are intelligent.
Thats why i'm always more willing to give him a chance because when he isn't in the team we really don't look like we are going to get in behind the opposition. And when running with the ball he does tend to attract two players to the ball which will free up space for other players. And in most scenarios when he is one-on-ones he will go past his man. He is very frustrating to watch but he has qualities that most other players in the team don't have and i think we did miss him in november.