Yes, suppose so, they could divert Sv. 24 and keep Sv. 22 on the
original route, but there is some sort of duplication as Sv. 24 and
Sv. 53 both go to Changi Airport!
I believe after Circle Line opens, Sv. 53 will get diverted
again(possibly more pain in the butt) or get withdrawn. After all
Circle Line will be operated by SMRT.