The INSAS MK1C is a good product and there are various other OFB products in caliber 7.62x39 and the latest in 7.62x 51mm......
But what i sincerely hope, is that DRDO/OFB, come up with a single small arms platform, which can cover, all the diverse weapon system requirements of our diverse and great nation.....doesn't matter even if it's by reverse engineering(no need to reinvent the wheel, and we are capable of sending space missions and ballistics missiles)... (The MCIWS comes to mind, but i believe it's not designed for 7.62X51).....
As per me, such a platform should be based upon the FN SCAR 17, simply because it's most reliable 7.62X51mm, battle tested platform TODAY... Also, this is the softest shooting 7.62X51mm rifle till date...
The vedio below (by a small company called Handl Defence), shows almost any configuration is possible with this rifle.......A single platform, which can be configured as diffrent models(from factory) either in a Battle Rifle/DMR (7.62x 51) or main assault rifle (5.56x45) or a 7.62x39mm rifle for counterinsurgency ....even a very good PDW is possible...I can write pages about this platform, but instead, will let you folks watch and form your opinion