I agree about the the Brit rifles. I would also remove the No. 5. I would support adding some other Lee-Enfield rifle variants even if the difference is in name only. A slightly earlier version for level 1's. Bren should have the bipod but so should the FG-42.
I would support having multiple versions of the Stent. The slightly different stocks can have different recoil patterns or handling. Remove lanchester.
Lewis gun should also be replaced with a Vickers.
If they could just increase the ROF of the No. 4 and get rid of the other 2 rifles I would be happy until they implement map-specific faction weapons/vehicles. Once they do that I think all weapons should be historical to the time period/location and balance should be found in other ways.