To be honest I think they made a big big mistake not doing a mid life upgrade for the entire SU-30MKI Fleet around 10 years ago.
2019 showed it cannot take on the F-16/AMRAAM combo and May showed it cannot take on the J-10/PL-15 combo.
It is massively outranged in missile tech and radar tech. Indians were going on about it being "Raptor of the East", "Mini-AWACS" etc
To make up numbers they had to throw in SU-30s against us probably knowing they were vulnerable.
Issue is they have 12 full Sqds of them with poor servicability. If they had done what China did with J-16 PAF would be screwed right now. They do not have to replace the engine
Get Israel to make a larger version of Elta 2052, mate it with the Rafael Sky Sting, SU-30 could probably carry 8 of them.
If IAF had done that fleet wide it would be in a very string position now.
Instead they are sending those birds up with 1990s Bars radar and 70 mile range R-77s.