Experimental is currently trialing rank requirement for equipment from arsenal, it may require tweaking in future but it will most likely be implemented to vanilla conflict in the next major update. Supply heavy loadouts are and will likely always be an issue but it is being curbed through this new system by ensuring that at the very least if players wish to run loadouts with high supply costs they must first contribute something to the team. Finding a balance between player freedom and realistic/practical loadouts can be challenging but dedicated classes are antithetical to the sandbox concept and there has been no indication that i have seen from the developer that such a system will likely be implemented in the future.
