If you have the patience of 1 hour waiting time + sardine pack.

Yes all ok.

KTM is getting worse. in KL Sentral now operating 2 platform instead of 4. you have to think if KTM service delayed or suspended, do you have other alternative?

You taking morning one. Komuter arriving Bangi station usually no available seat. Be prepared to stand until Mid Valley.

Dengkil?
Better take ERL from Putrajaya until TBS then interchange LRT to Midvalley.
Or
ERL until KL sentral and interchange to Midvalley.

Just saw this.. But in case it helps: KTM publishes their Komuter timetable here. Generally they keep to their timing but you have to know thst because of the double tracking project the timetable gets updated (for better or worse) quite often. Until thst project is completed you have to plan for an alternative mode of transport in case the timetable changes that doesnt fit to your timing.

Since your office is in midvalley you can consider walking to Abdullah hukum lrt and transfer to MRT at either pasar seni/kl sentral. Then take the MRT to Kajang.. Not all the way to Bangi but at least its another alternative.. Plus you can use the myrapid 100 pass which would be cheaper compared to KTM fares (ktm isnt covered in the myrapid 100 pass).

I am surprised with the comments here since this thread is pretty new.

So far for the past 3 months, my usual timing train has never been late for more than 2 minutes except for one day where one of the station was flooded and the whole services was disrupted.

Never for the past 3 months the train deviated more than 2 minutes from the schedule. In fact for the past 1 year, the train being late for more than 5 minutes were less than 10 times.