[rst]

For comparison, expendable payload of Falcon 9 more than doubled between the first launch and the current version. (Reusable payload of the current version is less, but still exceeds the expendable payload of the original Falcon 9 1.0.) That Falcon 9 increase includes the significant engine upgrade to Merlin-1D, but ISRO is already planning to replace the core stage of its GPSV with a larger stage taking different fuels, which should boost capability significantly.

[tankenmate]

Yes, and I think the ISRO has great vision for the future; its second stage engine is its first truly home grown engine and it performed admirably. Once it gets its own home designed and built engine to replace the Vikas (which is based on the French Viking 4A engine from the 70s) it will greatly boost the GSLV's lift capability.