I won't mind their merging IF SWR or CR plans to keep Nizamuddin KSK Via Pune route same as it is today.
There were some rumours about diversion of Nizamuddin KSK Via Pandharpur, Kurduvadi, Daund Route. If that happens then Chandigarh waali KSK NEEDS to be via Pune only as there'd be negligible patronage from Chandigarh, Ambala Cantt if Chandigarh KSK route is also changed via Pandharpur, Kurduvadi, Daund.
Pandharpur, Kurduvadi might be able to fill Delhi bound train by a long shot but Chandigarh bound train is definitely useless to them.
Pune...
more... is something that can't be ignored but people seem to want to try new routes apparently.