I personally use a different loadout on each map, as well as different ones for chaos mode. I believe we should be able to have a "default" we can set up, where you have a list like this:
Loadout -> Point of Contact
*Future Map 3*
*Future Map 4*
After picking one of these it would take you to the loadout page we have now. If you are in a lobby and choose loadout, it skips to the loadout for that map/mode and any changes you make are saved, but only to that specific loadout.
Example would be using MAAWs on Mayday, but if you join a friend in PoC, you aren't stuck with trinity rockets, it could be sentries, IMS, etc. based on the Point of Contact Loadout you have set up for yourself.