Premium svc can, but if it's all day svc then this may not be
possible.
Remember HK different from Singapore, here you have a dual-poly
system with SMRT dominating all PT in the NW while in HK you have
MTR as rail and KMB, NWFB for buses, more PTO running the
show...
So would SMRT wanna introduce a new svc that would conflict with
its NSL and yet waste operation costs? Unless you convince LTA to
let SBST do the job which is real unlikely unless it's Premium svc.
HK have bus operators that compete with rival MTR and also each
other, thus the better and more direct svcs coming up day by
day...
So not to say that YT don't deserve new CBD svc, just extend 972
or make 971E full day and let it start at YT can alr, pass through
a bit of BPJ won't die one... If they don't want they can always
take the MRT
Actually, don't have to even extend any of the services. Just
ply a feeder to loop around Yew Tee and connect to BPJ via KJE and
Woodlands Rd. They will need this anyway when DTL opens.