There is nothing futuristic in Armata. Tank designs and prototypes of 3 man crew capsule and remote controlled unmanned turret in a MBT existed in 80s and 90s in USA and Germany but they choose not to field it.
Arjun is comparable to the best tanks like M1A2 SEP,LEO-2A7,CHALLENGER 2 and Merkava -4 and belongs to 60 + ton weight class.
T-90 on the other hand having been comprehensively defeated in all aspects of tank vs arjun in 2007 is still being inducted.
Also we don't own the T-90 design which the Russians have refused even after taking money in the name of TOT. Also it is a shit of a design compared to Arjun mk2.
Hence for India Arjun mk2 and FMBT is the future.
Well Russians figure out after Gulf war that T72 won't survive if its up against western tanks, to export, they clothed new name with superficial modification by upgraded T72m into T90s. They themselves said 60% of production line of T72 is common with T90s. What was not common, later supplied by DRDO.
Now Russians didn't inducted T90s in number, because of above reason and went for adding armor on its tank, even Chinese are adding more armor into their tanks. Knowing what modern Anti tank weapons and other Western tanks could do.
Now coming back to unmanned turret, is that autoloader sometimes misfire or misload, to avoid this all the armies had manual loader, Russians have auto loader. Not out to mention that many crew members lost arm, when they wére not focused, it was very unforgiving.
Now they went to next level by going for unmanned turret, with more protection to its crew. This means that Arjun tank crew protection concept is correct. Now all going for it. IA not accepting the same.
Less said about T90s better it is. Moscow has shown our best crews, become useless, when tanks( two tanks) give up. It was not even desert of Rajasthan.
Last but not least, DRDO asked IA for its requirements for FMBT, IA didnt know what to put in, they still dont know, thats why they asked, others to tell what their FMBT could do, with minimum requirements. DRDO are making the same based on its own understanding. DGMF and his department has to work hard, could say lot, but not saying. But i should say, its stupid idea, asking others what they could do, because, we dont know what FMBT should be.
Tanks are ordered based on its tank doctrine, doctrine is based on geographical locations and how they want to operate and take on its objectives, w.r.t enemies.
Now instead of our tank doctrine, they are asking others to show, what they could do with their FMBT, with minimum requirements.
Others will supply its export version, which is lower level of system, they will not supply state of art system. We are at others mercy. They will milk all they can.
I already posted FRCV, Future Ready Combat Vehicle, was drafted and made in such a way to keep drdo/Arjun MK3/FMBT out. Only T14 could fulfil, thus criminal stupidly.