The problem with any further amendments to the Constitution is that the Senate, Congress and the shoe shine boy in the White House would have to approve it. Good luck with that.
The President’s Veto can be overridden by a 2/3rds vote of both House and Senate.
We can neuter the ‘shoeshine boy’ if we can take that many seats in both houses.
Although, I think the Amendments most needed are ones that limit the Federal government’s abilities to tax and spend. The 16th Amendment was passed on the ASSUMPTION that the initial income tax rate of 1% was it, but the Amendment was not written to include the percentage. I think a new Amendment should be written to say that the maximum tax rate on income cannot exceed 10% and no personal income can be excluded, nor expenses deducted or tax credited. Whatever the rate is, it must apply equally to all persons and to all sources of income.
Another Amendment needed because the Founders never considered it possible to spend as we have, would be to Constitutionally limit spending to a maximum of 20% of the prior year’s GDP or actual tax revenue, whichever is less.
Actually aamendments are a State initiative and one of the few remaining bulwarks of State power. If 2/3 of the States approve the Amendment, D.C. is stuck with it. it then remains for the People and the States (Amendment X.)to enforce it through the courts.