Most important thing is now they say freighters are moving with low overall averages due to crossings so after doubling that would be eliminated. Also the main reason cited for this project is port connectivity so they can increase freight traffic as well which will increase the revenue of SWR.
Regarding passenger service I hope they remove the 20 coach cap here and allow full 24 coach rakes including scope for 22 LHB coaches. That's the most important one. 20 is not enough for trains like Goa express and Amaravati express.
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they allow full 59 BOXN rakes here without imposing caps equivalent to 20 passenger coaches. Not to mention 5 WDG4s.

Even with ghat restrictions, SWR can help people with a train from Shivamogga - Hyderabad.
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I wish a daily train from Shivamogga to HYB is started (Shivamogga - Kadur - Davangere - Hosapete - Ballari - Raichur - Hyderabad). It will help the entire Malnad region people, as well as Coastal Karnataka folks who will surely travel to SMET for the train.
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helps Hyderabad tourists to travel to Jog falls and western ghats. Also students from Telangana-Andhra to travel to Davangere and Mangaluru - the 2 education hubs.
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My fav travel is by buses and seeing long distance buses. This gives idea on migration of people, also how ineffective IR is.
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Most travellers to Hyderabad from Karwar and Goa use the NWKRTC express bus from Karwar to MGBS. Its always full and sometimes standing, people sit on floor after some time.
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Western Ghats people also use KSRTC Sringeri-MGBS bus, it becomes full at Shivamogga. APSRTC (TSRTC) and KSRTC operate Volvo to Mangaluru.
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Then there are buses from MGBS to Davangere, Tumkur, Chikkamagalur.....
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Lack of train makes people take these buses for these long distance travel.