-Revise the Order of Succession so that in the event of the vice presidency becoming vacant, it just remains vacant, and the Secretary of State who was already approved by Congress in that role, is de facto vice president.
-If House seats become vacant (resignation/death/taking other office/federal appointment), instead of holding a new election for the seat delayed by many months, it becomes a party caucus/primary that elects the new officeholder.
-Why even have a VP then? Just abolish the position.
-What if they're independent? The House is big enough that vacancies aren't going to it up