This looks good Kucai. I'm including this bus route relation in osm.wiki/Bus_routes_in_Klang_Valley

Kucai, I see error for the route between Bulatan Berkeley and Bulatan Seratus. It should follow the main road not the side road. I'm not sure how to edit this using iD editor. So didn't.

Nice update using Andro Vespucci editor. ;-)

Hi Dinastik,
Did you check for offset necessary for that Maxa Premium imagery? I just check against Mapillary and OSC tracks nearby for that image and see offset (-5,1) or thereabout may be needed.
regards,
SMS

This Bandar Bestari boundary is incorrect. It is not here.