I agree with you on the political headache!I don't think this will going to happen for two reasons
1) Mk1a in pipeline, Mig29, Additional Su30mki, Rafale, Delaying phage out of Mig 27
1) buying big-ticket arms would be a political headache for any party in India. BJP has confidence but they prefer indigenous solution over a headache ( Rafale taught them a good lesson). For UPA ( Thugbandhan ), forget jets they will not dare to buy even a tyre due to fear, mistrust among allies and leaders
The same headache that kept the forces bereft of modern equipment for decades.
Mk1A production will complete 3-4 years before Mk2 production can begin.
The falling count will need 6 new squadrons. If they manage 2 MiG-29s and 2 Su-30MKIs then they still beed to go for 2-3 Rafale squadrons (based on the initial purchase agreement itself)