The route could be something like:
Yishun Interchange
Yishun Central
Yishun Ave 4 (2 new stops)
Yishun Ring Road (1 new stop)
Yishun St 41 (1 new stop)
Yishun Ave 1
Yishun Ave 8 (1 new stop)
Yishun Ave 6 (2 stops with 850E)
Yishun Ave 1
Yishun st 41 (1 new stop)
Yishun Ring Road (1 new stop)
Yishun Ave 4
Yishun Central
Yishun Temp Interchange
* Faster MRT connection to ave 4 from Yishun (current sv 812
takes long with poor frequency)
* Connects st 41 and new hdbs along ring road
* Service made to loop around ave 8 only because new bus stops
spotted. Does not make sense to have service ply ave 8 yet. No
development around currently.
I tot someone mentioned feeder 807?