Mki zation:- developing our own mission computer, our own rwr, our own EW suite, our own bvr missiles, our own multifunction display cockpit, our own digital fly by wire control to replace some parts of original russian fly-by-wire, our own irst etc, all of which are either already on su30mki or completed development and waiting to be installed.
And prototype stage of developing the new Virupaksha radar.
No11 Bars while an decades old radars, still helped us in part learning how to make radars.
So did manufacturing of aircraft airframe and engine.
"On going development" of tejas and Darin 1 upgrades did not create a "ecosystem of manufacturing a 4th gen fighter jet" at that time.
Hal's manufacturing su30mki has provided them industrial experience.
This along with tejas program
And now we have every thing(except engines) to make modern non stealth jet and solid base to make a stealth jet( again except engines

).
Shitl vls is not a modern system.
Shitl rotary system is from 1990's .
And shitl-1 "VLS" is from-2000s.
Russia created redut vls- in 2010s used in systems like s400, it uses their equivalent of western STANAG-3910.
Tho they are still behind latest western sdd's that are emerging.