One SF can run biweekly from Hubli to Delhi via Gadag, Bijapur, Solapur, Daund. Another SF can run biweekly from Mysore to Delhi via Hassan, Chitradurga, Ballari, Raichur, kalaburgi, Bidar, Nanded. These can be set trains.
There can be two more SF from Shimoga to Delhi - one via Chitradurga Ballari Raichur, Hyderabad and another via Davangere, Hospet, Bijapur, Solapur. These can be from Northern railway, as Shimoga does not have maintenance facility at Shivamogga.
Rajdhani is not feasible. Naming as KSK also could be an issue as Karnataka is the only...
more... state already having 3 KSK (though no proper ಸಂಪರ್ಕ).
Similarly, one good express train from Bangalore to Mumbai via Tumkur, Davangere, Hospet, Bijapur (this can go via Tumkur Chitradurga line after new line is opened).