No need to think about 80th or what,They can anytime implement
new service or withdrawn as they like.Jurong west supposely to have
26 but left 25 due to 256 withdrawal
If you notice, the new bus services launched by operators are
all short working trips, complementing an existing bus service. Eg.
110 complements 858, 170A complements 170, and 912A/B complements
912.
Moving on, I would expect more complementary bus services to be
launched to complement existing bus services.