Yes, one should go back to the original rules to see how fighters developed.
Originally they did:
a) remove bomber marker on a 1:1 basis
b) remove fighters on a 1:1 basis
c) remove torpedoes on a 1:wave basis
Now, where and why is supression added? Well, to justify mixed fighter and bomber waves. In the original rules mixing waves had zero effect on all and anything in the game.
So, that is it.
Do fighters need to improve beyond what they do? Is that needed?
On a historical basis (refering to Vaaish here) WWI/WWII the fighter-bomber ratio was 1:1. When we apply the sci-fi approach from Wing Commander, Star Wars, Space: Above and Beyond fighters would be a lot stronger.
Perhaps all fighters are resilient then? (with something new for Eldar/THawk/Manta).
Or fighters roll D3 versus a wave they encounter and that is the number of removed markers. Where resilient makes it D3-1.
Just mind melting here.