I think that the 1970s-era of regional governance, while a great success in many respects, has not been properly examined lately, and we’ve only had haphazard changes since: the amalgamations in Sudbury, Hamilton-Wentworth and Ottawa-Carleton, the breakup of Haldimand-Norfolk into just two municipalities, and of course, Metro.
Peel was always going to be a bigger nut to crack as it was a dissolution, rather than an amalgamation, and the only other municipality to do that route was Haldimand-Norfolk, a much less integrated regional municipality that was set up for major urban and industrial growth that really didn’t happen. (See Townsend.)
H-N didn’t have integrated water, waste, or police services; the ambulance and public health services remain as leftovers administered by boards covering the same area. Unlike H-N, Peel also has complex social services and housing infrastructure.
So there was no precedent for dissolving a region like Peel, only amalgamation. I think it could be done with much more care, time, and public consultation which this didn’t have at all. Perhaps the GTA needs a fully integrated public water and wastewater system as York is mostly dependent on Peel, Toronto, and Durham anyway for Lake Ontario access. That would solve the biggest issue for dissolving Peel, as you could still have an integrated police board (there are other police services shared by two or more municipalities without a regional government, like Bradford and Innisfil). Health services are another.
But we never really got to discuss these rationally because Doug and Bonnie were both trying to appease a ghost.