I agree with everything that has been posted so far. But my biggest issue about immersion lies with the movement, penalties for park core should be more noticeable and punish players for doing things like jumping of the second floor and land into a slide while holding an LMG.
There are plenty of games that have park core incorporated into them. I hope BF stay away from that. I don't mind what they currently added but there should be a trade off. The penalties should be heavier or lighter depending on your weapons handling stat (can park core with a pistol, but not so much with the LMG). Personally like to slide for cover but I don't like that you can aim as well (should vary depending on the weapons handling)