Just accept that apart from 4 and 9 no other Para unit will ever actually be SF and move on.
Imo let's just talk about MARCOS now lmao /s
well
1 hasn't compromised on the standards, remember Maj Sushant saying in that beer biceps interview "Our unit has a sanction for 40 officers and only 14 are their"
Compare that to an article by Lt Gen PC Katoch he says that till 21 and 2 standards were still good but when 3 and 4 were raised standards started getting diluted to get the numbers.
As for 4, I think they got an uplift after the 2016 direct action raids in PoK. So they are getting better. 9 was in Sierra Leone too, guiding 2 in operations. Just like Brig SS Shekhawat was in 9 and when 21 was created he came their. Same with Maj Jacob when posted to 11. 11 is also good I think theirs this photo two years prior where they had all the best physical performances airborne and SF and 11 and 9 got most of it. I think the army should've stopped this nonsense long ago. But it carried on....Paltan bazi and maroon bazi - they never got rid of.
At most, I'm still in for a SFR with 1, 9 & 10. Maybe keep 4 and 21 as reserve or something idk. This should function like a proper SMU. But things wont happen magically. Additionally have Para guys on deputation like it happens in UK's SFSG and make a support group or rangers kind of thing. The mess has been created so large that it fill take huge effort to fix it. The first major effort is to realize the mistake. That hits their ego hard.