Just look at Toronto and how the subway hasn't spurred development in some places for 50 years. It all depends on zoning. And Mineola, particularly Mineola West, but increasingly Mineola East as well, is full of wealthy people who will have no desire for intensification in their neighbourhood. You may see some small development facing Hurontario (maybe the plaza with Cousin's, for example) but I think the area will largely remain intact, with development to the south (Port Credit) and north (the Hospital district, Cooksville, Fairview and Square One of course).