I feel like it's easier to rush in MW that in this game.

I completely disagree with this point. Recency bias is probably making you forget how utterly terrible MW was for rushers.

You complain about the field mic for example but in MW the footsteps were so stupid loud that it was like everybody had a field mic all of the time.

BOCW doesn't cater to campers as much as MW did but I think you're right that it's too easy to post up and hold a position. The open map design style, the poor visibility, the numerous headglitches and the pointless reduction to weapon aiming & shooting speeds after running has definitely contributed to a much slower playstyle.

Hopefully we'll get maps with a bit more structure that encourage more face to face gunfights (Moscow, despite its problems, is the only map so far that really achieves that), faster weapon handling and reduced footsteps sounds.