Hamilton trusted the central government more than I do and I usually find myself disagreeing with him. Nevertheless, apparently Congress is commanded by the Constitution to call a convention if the legislatures of 2/3 of the states apply for a convention. There appears to be no wiggle room but politicians and lawyers ALWAYS find things in the Constitution that aren't there. Anyway, it sounds like a rubber stamp deal to me to the point where if Congress drags their feet waiting for a new election of state representatives who would oppose such a convention, then maybe the states should go ahead anyway.
Maybe this requirement to have Congress actually call the convention is useful as some kind of verification step that the legislatures of 2/3rds of the states actually did apply. But unlike Hamilton, I don’t trust those politicians because they know this convention will take money and power away from them. I could see Congress doing everything they could to delay and stall until maybe some new state legislatures were elected who would oppose such a convention. I say if the legislatures of 2/3rds of the states applied and Congress stalls, have the convention anyway on the grounds that Congress (once again) is behaving unconstitutionally.