Maybe sv58 can be shortened to S'goon Int, thou it can break the
5x family of Bishan. From Bishan, if ppl wan to go Pasir Ris, they
could take 59 or 88. Even Serangoon Central, they have sv81 and 109
as alternative. For the sector along Boundary Road and Ang Mo Kio
Ave 1, sv53 is the alternative.
People travelling from Ang Mo Kio Ave 1 and Boundary Road to
Paya Lebar, they have sv22 and 24.
sv58 should remain. sv53 should be the one to be cut.
simple reason. 58 use substem, 53 main stem xD