As much as I like the Talwar class, your post evokes just one response "My, an update of a Soviet era Krivak class frigate. We should all be scared now?" Can we get over this now?
How can you state this without even knowing anything about what ship exactly is expected?
Batch 2 Ada (TF-100 Istanbul) has 2x8 VLS Mk41 IIRC.
If it is Ada and fitted with RAM then the RAM block 2 missile would give 22.5km range rather than 9km for the older RAM missiles, as compared to 12km HQ7/FM80 or 15km HQ7/FM90 and 9 km for FL-3000M.
Longer range missiles would be nice, but are not a necessity for PN: they should be operating under land based air cover (to take care of flying launch platforms) and have sufficient range AShM (to take care of sea based launch platforms).
Why? (is this necessary?)