I don't think it's as binary as Gomes is either the most complete midfielder since Arteta or not progressive enough.
I love him, think he's a fantastic footballer and a joy to watch - but also agree with @brap2
I would just change the wording slightly from 'he should be more progressive' to 'we are not progressive enough as a team and so I am looking to players of great footballing ability, such as Gomes and bernard, to produce more for the team in this area'.
Is Gomes awesome? Yes.
Are we progressive? No.
Can Gomes do more for us in this area? We hope so.
I would pay up to £60M for him but it's probably that kind of accounting that got me declared bankrupt.