Changing the laws, even changing the constitution, means nothing if the current laws and constitution aren't enforced. If we can't enforce what we have, what difference will a new Potemkin constitution make?
States will not send representatives. They will send delegates with commissions. Delegates act as agents for their principals, the state legislatures. There is no way a convention can be blown wide open and into a free for all.
Proposed amendments will hopefully be structural in nature (like Mark Levin's) that cannot be ignored. Repealing the 17th amendment, term limits, state review of federal statute, regulations and Scotus decisions aren't subject to Leftist whimsy.