While I don’t really like the complete radicalism of historical RB there should definitely be some context when fighting in certain planes. Sabres and mig 15s with no missiles should not be going up against supersonics and planes with missiles. Mig 21s and F5s should not be going up against F16s but there should definitely be an equipment level of matchmaking in terms of historical accuracy. F14s with ARH missiles should not be up against 11.0-11.3 planes that have only IR missiles and the A4N Ayit should not be up against other 8.3s-9.3s that don’t have flares and missiles that can remotely compete with them. A start would be to completely take out or separate all the attack aircraft with their overpowered missiles and lackluster flight performance in some way or create 2 versions of 8.0-9.7. One with no missiles and historically accurate tech relating to their time of their main deployment and one with missiles and flares but is completely separate from the previous generation of jets.
Here’s a rough more specific version:
BR 1: 8.0-10.3 – Mig 15s, Mig 17s, F86s, F9Fs, Mig 19s, F100s, Mig 21s, Hunters (no flares), Javelin, Lightning, Kis, Me 163s, Q5 (no countermeasures), Sagitario, F8Fs, Vatours, J29F, A32A, Mysteres, Super mysteries, Alpha jet
BR 2: 8.0-10.3: A4s, A10s, Su25s, F8U (should be 10.3 or 7), Harriers, F104s, Yak 38, Jaguars, Hunter F.58, T2s, F1s, Q5s, F8E(FN), Mirage 5, Super etendard, Mirage IIIs, J35D, Ayit, A5s
Planes that can go into both BR 1 and BR 2: (there are definitely more that can go in between both BR 1 and BR2 but this is just a rough concept)
Sa’ar, G91s, Q5s, T2, Buccanneer, Javelin, Schimtar, Super mysteries, F3H, Vatours, etc.
I know I’m missing a lot of planes in all 3 areas but you can get the idea from separating planes into different BR categories while staying in the same BR range. It would just make things more balanced and more fun if its done right, It took me literally 5 minutes to just decide this but if they put a whole team into working on balancing this it could be figured out in no time and make the game 10x more enjoyable while making more people invested into lower tier jets compared to what it is now.