I cannot comment in detail, but take this that every aircraft qualifies for for Kh31 is also qualifies for Kh59, Kh29 and a idl 90 variant, Same goes for R77 R27 and R73, if the com bus is compatible with r73, it has to be compatible to read device address for r77 (all but two variants) and r27's.
Only because the software might be compatible, it doesn't mean the hardware is, nor that any weapon that on paper could be added, would be added. As I said, not a single of IAF's or INs Mig 29 can carry Kh59, although the software should be compatible, similarly IN's is not going to use R27 which only were procured by IAF.
Now as far as the munitions itself is concerned, the potential to operate Rvv-Sd/PD/MD/AE is extremely valuable for an aircraft like LCA
Not really, when our forces have already decided to replace R77s with Astra and to use Derby as a stopgap solution on LCA and N-LCA. As I said, that makes R77 only important for exports and as long as exports are not considered yet (which I don't think is the right way), wasting money on the integration of R77 that could had been done for years if we wanted it and with the EL 2032, makes no sense.
as far as python 4 is concerned, as of today it stands as the most advanced all aspect aam and will remain a force to reckon with for this decade.
True, but still our forces had not ordered it for any other fighter execpt of the Sea harrier possibly. LCA has integrated R73 and even the Jags are likely to get ASRAAM with the coming upgrade, which shows why it would be a waste of money again to integrate it to LCA for our forces, only because IN has a small stock pile of it. The cost for integration would never give enough value in return!
Realistically, LCA will be aimed on Indian ammos mainy! Astra, Sudarshan, Helina in first place, R73 since we widely use it and are happy with it's performance, Kh 35 most likely for commonality to the Mig 29UPG an Ks and personally I would love to see SPICE 2000 and 250 PGMs which would make LCA far more capable, but given it's minor operational importance in IAF and IN, it's not a necessity, because LCA has not the operational importance that JF 17 for example has in PAF!
Did they start testing with radar? did LCA get new radome?
Since they still seems to fire only R73, radar seems to remain the main problem and why MoD is blaming DRDO for the delays. The new nose would require proposals from foreign vendors, not sure if somebody had replied to ADA's tender, but shows how difficult it is when your design agency is not even capable of finding a solution for the nose on it's own.
If HAL had done this project with a foreign partner and foreign systems from the start, like they had done it with Dhruv, LCA would had been a success today.