Better sort out whether to build doctrine based on capability of weapon systems or build/acquire weapon systems based on doctrine.
Only then pick that glossy brochure and start getting orgiastic over printed capabilities & product features.
This is the biggest problem of DRDO - to force play Generals. DRDO has been trying to do others job of fixing the doctrine rather than making systems as asked for.
DRDO has been blatantly interfering and trying to dictate the Nuclear doctrine of India as also doctrines for use of Missile in the garb of technology. They make Prahar without anyone asking them to do so and then try and dictate doctrine to Armed Forces in use of ballistic missiles and force the missile on them.
What actually you are implying is that the Army should have a doctrine of abandoning the defences once a tank reaches 500 m from it. Because 500m is the limit of DRDO technical and Scientific efficiency. That is the implication of a doctrine according to DODO weapon capability as advocated by you outrightly.
In respect of Arjun you mean there should be a doctrine of not crossing own obstacles like a Canal on the border and launch any operation across IB because Arjun is a fat ass and adequate class bridge are not there for it to cross the Canal.
I think that is what is a bizarre situation. Sabotage Forces operation by denial of capability or by posing technical hitches. There indeed are such dangerous people in DRDO who wish to write doctrines for the Armed Forces so that their empires and warm chairs remain intact and their abject inefficiency is justified by their technology-based doctrines.
If you are anywhere close to DRDO please leave it as soon as possible because such kind of mindset is sabotaging in all implications. DRDO must put you through basic entrants training capsule to de - brainwash you.