Kuala Lumpur opens first phase of Putrajaya Line
https://www.railwaygazette.com/kuala-lumpur-opens-first-phase-of-putrajaya-line/61846.article
Putrajaya Line runs along KTM Commuter line. Rather than building the new rail, there should be more trains on KTM Commuter line.
There are just 7 services per day from Sungai Buloh to KL Central and the same from KL Central to Sungai Buloh.
I think there should be at least quarterly services per hour between Sungai Buloh and KL Central.