I agree with you, the mirage 4000 itself doesn’t need any additions or changes.
The only corrections should be to make the aircraft more accurate to match its IRL performance and capabilities. If we already have that, then it doesn’t need any changes or additions to make it A-Historical
The only “change” it should receive is if it eventually needs a BR adjustment if it is performing too well or too weak in battle.
I am just pointing out that gaijin are quite hypocritical when it comes to determining what balance changes are “nescessary”
The British phantoms for example still don’t have AIM9Ls despite the missiles and the plane being in the game for nearly 5 years.