If those NETRAs are as mediocre as you suggest, what was the idea behind going in for it? Didn't the IAF factor in that all future FAs would be equipped with AESA? Including the Super Sukhoi upgrades ? Why did ACM Bhadauria make the claim as reported here a few months ago that he's looking at inducting more NETRAs? Are you better informed than him? Are we to assume that the NETRAs being planned are going to be the same as we've inducted earlier with no upgrades leave aside radical improvements? And what's this about DRDO AWACS also employing weapons? As far as I know, I doubt if the AWACS of any nation serving or planned include such an ability. But that's only as far as I know.
NETRA isn't mediocre, it's just that technology has reached a point that a much larger AWACS is simply indispensible and is incomparable.
There is room for more NETRAs, but only in the previous blacklisted configuration. Any new attempt will only come later than AWACS-India, making such an exercise pointless. Nothing more there.
It's not about being better informed, a lot of procurement decisions, especially the ones that are publicly talked about have political connotations. The air chief asking for 5 more NETRAs publicly is, as I said, fine in the present configuration, it will take only 3-4 years to get all 5 in, but this is also IAF's attempt to get some funds in their kitty that would normally be earmarked for something else, perhaps not for the IAF. It's all about fighting for that last piece of pizza. Normally, he wouldn't need to publicly say the IAF is interested in more NETRAs anyway. But considering it is of a lower priority and the company is blacklisted, he has to make his views public in order to make it seem important.
As for weapons, no, it's not the AWACS that's employing weapons, but the AWACS taking operational control of offboard weapons, like aircraft, SAMs and land attack cruise missiles. C&C decisions for SAMs and such are normally taken centrally. So AWACS with a larger air picture will be able to take more informed and quicker decisions as long as they have the hardware and personnel onboard, which is possible only on wide body AWACS like the IL-76 and A330. It's primarily about directing all elements in the battlefield. Today we are building or have the technology that can control all aspects of a battle, something called C5I or Command, Control, Communications, Computers, Collaboration and Intelligence. It's new age warfare, a system of systems. And AWACS is going to be central to this theme.
5th gen technology is such that something like the NETRA has become less important. A back seat Rafale driver will probably have more information to share than the NETRA will in the near future. The same with the upgraded MKI. NETRA was initiated back in 2003, when such technology didn't exist, so the IAF's procurement plans and requirements for as many as 20 NETRAs are from that time. In simple terms, NETRA is good, good enough to help support LCA, M-2000 etc, but in a few years it's going to become outdated. And a two-seat FGFA will make NETRA completely obsolete. AMCA may create the same effect at a later date. And procurement is done looking at a 20 to 40-year picture. NETRA barely even manages 5, let alone 10.