Idea is good. Will give another outlet for Hosur bound trains. But unable to understand how this new line will benefit trains towards TN and Kerala. From Hosur, trains have to come to Heelalige, take new route via Hejjala and reach SBC. No other route possible. How they will avoid SBC?
Probably, trains like CBE LTT and DR TEN can use this route to navigate in Bangalore.