Sergio Gomez is not even a striker in any sense, he never has and never will be. He is a currently a winger who like to come inside. His future is probably a CAM/CM/#10. He is a versatile attacking player and a damn fine one.
I guess I used the wrong term. I meant forward players which includes all different types whether it's striker, winger, #10 playmaker, #9 scorer, etc. Gómez mostly plays as a forward but even when he starts as a midfielder, he is still limited to more like a wide midfielder in 4-2-3-1 (whether it was intended by him or coaches) so he will still need to adapt to the role of CM in Barcelona 4-3-3 midfield which is different from typical attacking midfielder role.
I do agree that he is a versatile talent but he lacks some of the necessary qualifications to survive as a forward as he moves to the higher level which is similar to the case with current Lee (unless he changes his playing style similar to that of Pedro).
He lacks physical ability&balance, agility and explosive pace to be competitive in the top-level football. However, he possesses good vision, creativity and is technically gifted although not superior enough to overcome those flaws. So I hope Gabri try him in midfield in the coming season before it's too late.