No Alcohol No Drugs - the only addiction is Railfanning, to escape the negativity of the world. - Keshav Singh

this Line must be extended to Connect Puskar[for Ajmer], Merta City[for Merta Road] & Bilara[for Jodhpur]
so the line will be like:-
MKN-PRCY-PUHT-MEC-BARA-JU = MKN-JU alternate railway line.
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Madar MTD

Interesting suggestion...
Currently, the new line connecting Merta City to Pushkar has been sanctioned, which when completed would connect Bikaner to Ajmer almost in a straight line.
People in Bilara have been calling for a very long time now for the line there to be extended from Bilara east to Bar (pronounced: ) on the Beawar - Marwar Jn section of the NDLS - ADI mainline line. That demand has not been met despite numerous surveys since 1974 and the fact that the distance between Bilara and Bar is less than 50 kms....
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I doubt if they are as keen on a connection with Merta.
click here (petition on social media)
click here (RTI response)
According to the article posted above, this line (Makrana to Parbatsar), could get extended southwards from Parbatsar to Kishangarh (close to Ajmer on the Ajmer - Jaipur section) provided the state govt and marble miners contribute some money towards the project (I don't think that will happen). However, if such an extension from Parbatsar to Kishangarh were to happen, then it would make sense to consider extending the line from Makrana north-east to Sikar which would then connect Loharu (in Haryana) to Ajmer almost in a straight line.
If I had it all my way, I would have been drawing lines all over the railway map and see them manifest on the ground... hehe...