Even a start in 2009 would have been OK. They had already seen the Nag trials up teen times by 2009 and the Nag was near perfect, even at that time.
Reducing the range from 4 Kms to 2.5 Kms and making other other changes to system, the weight can probably be reduced to between 14 to 18 Kgs. In fact there was a news item in 2005, stating that DRDO was going to start working on a Man portable version of the Nag. Though nothing seems to come of that.
So, as per you, all it takes is simple miniaturization of the elements and voila, NAG would have materialized into a man-portable version? Well, it that was so easy, why was it not done? As you've yourself stated, DRDO did make announcement about man-portable version of NAG but nothing came out of it - I'm sure, even that is the fault of IA. Isn't it?
Again, if I understand correctly, each RFP falls in a certain category - and this category is arrived at after scrutinizing the domestic capability and securing the interest of DPSU (like in case of EW equipment which went to DPSU). The fact that RFP was issued to Uncle Sam for Javelin in the first place (and other OEMs) with condition for TOT, it is likely that DRDO was itself looking for technology from abroad - especially, the seeker tech for a man-portable version.
IA had already placed huge orders for Milan 2T and Konkurs (somewhere in the range to 10,000 to 15,000 missiles each), between 2007 to 2010. They surely knew that they needed to phase out the older Milan's and replace them with the 3rd gen fire and forget type of missiles.
To begin with, please get your facts correct - rather than post what you thing, please read up and post the facts.
RFP was issued in 2009-2010 for 3rd generation ATGM - and keeping in mind the induction schedule for these missiles, the delivery of 4,100 Milan-2T was staggered. Konkurs are irrelevant to debate - they are for BMP-2 in the IA.
To think of all the hard work that has gone into the Nag, 20 plus years of effort, having an indigenous IIR seeker and also perhaps a MMW seeker shortly, an order of 443 missiles, is almost an insult.
What to you is an insult, is to me plain ignorance - using your knowledge, please tell me, how many Nag missiles should have IA ordered and what should be done with them? Also, ever heard of Defense Plan wise induction of equipment into Services? And, how do you know there will be no repeat orders?
The last few user trials of Nag are also an indicator, that the missile system is never going to be deployed in numbers by IA. First they found faults in the NAMICA, after having slept for at least the last 5 years, during which time they have been conducting user trials.
Was the IA conducting trials of NAMICA all these years or the Missile itself?
Then in the last trials, they seemed to have tried Lock On After Launch, when the system is clearly not designed for it
Again, jumping the gun, are we?
Here, read this: http://www.thehindu.com/sci-tech/technology/article2707196.ece
So, as per the above report, RCI had as of 2011 tested RF Technology for MMW Seeker during NAG trials and this can be used for Lock-on After Launch (LOAL) mode.
Nag Project Director S. S. Mishra said that in Sunday's flight, the seeker's capability to track the target in a ‘Lock-on-Before-Launch' method, right from the missile's firing and throughout the trajectory, was successfully demonstrated. In future, the seeker would be used in a system in ‘Lock-on-After-Launch' mode for extension of the range.
How do you know that IA was not testing this feature in one of the NAG missiles during the trial? All the news we have of that test is some anonymous source from DRDO.