I wouldn't. Rosicky and Cazorla were CMs, the fact they were sometimes played wide I guess shows versatility, but we never saw the best of Rosicky until he was more central.
Iwobi hugs the touchline far more than Hleb and Nasri ever did, in fact Hleb was fairly central. Nasri's first thought was not to run with the ball, Hleb, Rosicky and Iwobi all had that mindset - although I will concede that Iwobi doesn't actually play like an out and out winger at times.
Raheem Sterling has improved his shooting, well, the stats say he has, his tekkers is dodgy as f**k though which is why he misses so many good chances. I think what he has improved is the positions he gets in, typically for tap-ins.
Can Iwobi improve his shooting?? Surely he should be able to!! Surely with enough training and repetition he should be able to strike the ball with the 3 parts of the foot that enable an inside curl, a dead straight shot and an outside curl. f**k me if I can do them and get good contact and I don't train every day he must be able to do them. So why can't he???