Perhaps I may correct you Service 853 only service Upp East
Coast Terminal on Sundays and Public Holidays, and Upp East Coast
is rarely used by passengers. Yes, very modern, perhaps the nicest
terminal around, but there are only 1 or 2 passengers alighting
from Service 13, and the freq is very long.
I think the first sep SBST should do is do relocate one of the bus
stops near there, either Bedok CAmp or Opp Kew Green, to right in
front of the terminal, so that passengers transferring from Service
10 or 13 can change at the terminal to increase passenger
traffic