Our first Article Five Convention should target the repeal of the 17th amendment, the direct election of Senators. This is clearly something that needs to be done and I believe is achievable.
Many of our modern tribulations with an out of control national government stem from the 17th. I agree that repeal is doable if the states make the case. Oh, and if PDJT, after his blowout victory next year, calls for a COS.