Sorry but I simply do not see it.
If anything, towns like Clarence needs to stop using the ECSD and consolidate services with Amherst. As of today, these two towns account for almost 15% of the population of Erie County and that number, if anything, is going to go up.
Taking it a step further, Amherst and Cheektowaga police departments should merge and fold in Clarence. The population of these 3 towns, as of the 2000 census was 225k. Add in Lancaster and you have a population bigger then the City of Buffalo and could easily place 4 deivisions over each town. Something like this would make much more sense then folding into the ECSD.
The ECSD, has too much on their plate. They already are mismanaging the jail system and really should focus on rural services to places like Newsted, Alden, Marilla, Wales and other 3rd/4th ring rural areas.
The biggest complaint anyone should have is with Clarence. They already get support from the APD and use, what is in my opinion, more then their fair share of the ECSD resources.
This is only going to become greater as Clarence grows.