The idea is to change the strategy we are following for last 30 year without any desired outcome..
What you are suggesting is not enough to make Pakistan change it behaviour. It will just make it more determined. We do not have the capability to change Pakistan's behaviour militarily unless we go MAD.
Current govt did brought some changes with surgical strike and Balakot to send a message to pakistan.
But they are still reactive measures, targeted terrorists and not PA. Also fraught with international intervention as we stroke deep in Pakistan territory.
1. My idea is purely to punish Pakistan Military within 30KM stretch across LoC.
2. Since we wont crossing LoC physically, it wont bring in international attention.
3. Use of heave artillery on LoC is old game but new capability like precision strike, they have become lot more lethal. Use drone to target acquisition, use AGTM or may use guided MRBL hit pakistani command posts within 30KM range.
3. Yes, Pakistan will retaliate, it will be us vs them rather than us vs pak proxies. And if we keep it limited to 30KM, they too will keep it limited to 30KM on ourside. If they go further we can respond in similar fashion.
4. Pakistan wont start a war, because it wont serve any purpose beside drawing in people of Punjab and Sindhi who are least interested, Pakistan isn't in economic position to wage a full fledged war with India.
3. And biggest gain in this border war will be stoppage to cross border militancy and it's facilitation of near LoC as PA would to busy fighting a real war instead of proxy war with India.