You may be right if you are going to Tampines for leisure such as shoppings, food etc or for students, adults studying or working in the east.
But for those who work & study in town area or west area, they may prefer Bedok as they save a few stops of MRT travelling.
I wonder what is the operating hours? It makes a difference if the service caters for peak or non peak hours.
Savannah & Elias green provide permanent shuttle service. Cost shared by residents under MCST management. Wonder if WFW finds it feasible but then we don't know how much it cost.
But this will not be necessary comes 2016.....
Hope earlier..