Almost everything comes back to recruitment. As a simple example, had we kept or adequately replaced Lukaku we'd be closer to Arsenal rather than hanging around trying to claw our way to 40 points. It wouldn't really have mattered who was in charge.
Some players we've brought in are ok, but we haven't bought any that lift us to a better level. To put it another way, we've not identified talent that any of the top teams would try and poach from us. That is us failing in recruitment and it leads to mediocrity at best. During both Moyes era and Martinez's "era" I was always a little concerned a couple of players would be snapped up. However perhaps with the exception of Coleman, maybe Davies there is nobody anymore I'd be bothered by us losing. In fact, almost the opposite as I want a lot of the players out of the door.
Recruitment is our single biggest issue right now. Albeit followed closely by the manger.