Amendments being subject to presidential veto is a terrible idea. I agree that there should be a bit higher threshold for pushing Amendments down for ratification, but to the extent that is done depends heavily on what legislature we end up with when all is said and done.
This is exactly why I've been pushing to strike the text of the current Constitution in full. We need a complete re-write, not piecemeal reform.
Which is why I agree with this ^. It's almost impossible to have the Amendment process in detail when we don't even know the legislative system we're going to agree to.