You try travel from Tuas link to Pasir ris, see how long
😆
And why circle line no connect to Tuas link so called outer station? 😂

Those interchange of circle line are Southern part happening areas in Singapore, buona vista, bishan, serangoon, mac person, Paya Lebar.

You shall open Singapore map to observe those stations, not the mrt map itself. The mrt map will mislead you think those stations are everywhere in Singapore. In fact Singapore mrt lines are focusing on the Southern part CBD

Talking on parallel lines, then you shall check the Singapore North South line and East West line. Also two lines which require you to travel very long till centre areas only can proceed to another line. Similar to your case to travel from Kajang to Klcc area to interchange.

No, it's the LRT 2 line that use way more than 10 years+ to complete. Which is the current bukit jalil/Sri petaling Station extended to puchong and subang area.

Next year 2020 economy could be not very optimistic, last time the delay of lrt2 also because of the 1998 recession. Touch wood if anything happen like back in the 1998, this mrt3 line could also will be delay more than 10 years.