I think the game could benefit from smaller either biweekly or monthly small content updates with smaller items to keep the community invested between larger content updates. Things that could be included in these updates would be
New multi mounts
New weapon camos and wraps
New equipment (new sights new variations for tents, tripods etc)
If a full character customization system is added new character customizations
New dog types other than just the bloodhounds would be nice
Small teasers towards next big update
Bug fixes (like usual)
All of these things I think could improve the game and make it more than just wait for the new map to come out play it for a while and then just go back to great one grinding.