I am sorry, but your post didn't make sense to me. Two inbound SU-30's can lock onto 12 PAF jets and fire 1 BVR each. OR, they can lock onto 6 PAF jets and lock and fire 2 BVR's each on 6 of PAF jets. These two SU's can be the fighter escort for 4 other SU-30's fully loaded with weapons to be dropped on a location. So you let TWO SU's take down SIX - TWELVE defensive PAF jets. And remmeber, the PAF is ALREADY much lower in numbers!!!
How many of these attacks are needed before PAF's entire BVR force is taken down? Remember India has 200 SU's.....and many Mirages, etc, etc, all BVR capable.
So, you need to increase your multi-target locking and firing capability as it is an essential force multiplier that is needed really bad. Your Mirages (older ones and F-7P's) are still really point defense and strike aircraft (I can't imagine how big of a strike component F-7 can present due to its weapons limitations). So at the end of the day, at best, the Mirages and the F-7's are at best going to defend against 1 inbound target, even that within 18 KM's due to sidewinder's range of 20-22 KM's. Now imagine if the BVR tier was taken out, what's left? And how do you deal with it?
Again, the MORE multi-target capability is added to every PAF fighter, the better it is. Its MUCH cheaper to hang 4 or 6 BVR weapons to a jet than building 4-6 new jets from scratch. A very advanced missile cost $ 500 K I think. A new jet takes months to build and costs $ 20-35 millions (JFT block II and III price quotes). So why would you not hang "more jewelry" which is cheaper and provides quick and real impact immediately if the Radar can support multiple target lock and fire capability?