June 2019 - last edited June 2019
I get that it may get too congested to add more weapons to the current set of weapons, and that adding more weapons would mean a lower probability of getting a weapon you prefer. If that's the case, instead of simply adding weapons, how about a new rotation of a set of weapons? For instance, one of the games will randomly have the current set of weapons from group A (i.e. everything from the Gewehr 43 to the Boys AT rifle), and another Firestorm match will only have a set of weapons from group B (e.g. EMP, Ross Rifle, etc.). And more groups can be added, e.g. group C can have the yet to release weapons such as the M1 Garand, Walther PPK, and German At rifle.
Overall, each Firestorm game will randomly select a group of weapons to be available in the game. You can see which group of weapons will be in Firestorm while at the preround hangar - e.g. instead of the Boys AT rifle by the airplane, you'll see the German AT rifle and know that you'll be seeing the Group C weapons when the match starts in Halvoy.
Just my 2 cents.
June 2019
The current rotation of weapons are definitely getting stale; even just a change in specs would go a long way as I see myself going for the same weapons over and over (Blue+ MP40>Blue Bren> At Grenade Launcher).
As long as there is at least one weapon of each type (since I hate semi-autos and sniper rifles) in each group it would be great to see different groups as you mentioned.