Utahns would love it if our Initiative and Petition rights were as broad as those in Colorado. With a much smaller population, Utahns hoping to enjoy citizen governance must gather 95,000 signatures, and they have to come in a fixed formula that involves an extensive effort in at least 26 of 29 counties. Then, as a new twist, a bill from the past session gives opponents of any and every proposal 30 days after submission of signed Petitions to the Secretary of State to contact signers to sign taking their names off of the Petition. Proponents, meanwhile, can do nothing during that 30 day "cooling off period".
Professional politicians much prefer to play to the party base (on both sides) because that is a much faster and easier conversation to have on the way to victory. With direct citizen involvement in the legislative process the development of grassroots movements is inevitable. And grassroots movements mean informed and active citizens, a politicians worst nightmare.
So while we actually now enjoy technological advances that make it possible for government to become more democratic than anything since all of the members of a tribe were able to sit down, talk, and decide their collective fate together, big money and big power is bent on an all out fight against Democracy.
Accordingly,one way that the U.S. Constitution could be beneficially changed is to create a strong right of direct citizen involvement in all levels of governmental decision making.
Money, per se, doesn't have to pollute the political system, but it always will under the set of rules, or lack thereof, that our politics are forced to be played under. Serious citizens of every stripe have their political yearnings and actions harmed by the simple mathematical computation of the amount of money it costs to buy 51 U.S. Senators (or, really, 41 under the truly inane rules that govern "The Most Exclusive Club on Earth") when that many can be garnered from low population, low budget/price tag states, and have a vote equal with those whose ownership might reasonably costs fifty or one hundred times as much. Not that Big Capital couldn't come up with the investment even if they had to pay full market for all 536 elected federal office holders, but I'm sure that the savings involved with absolutely having to own no more than the Senate and a Karl Rove/Roger Ailes led propaganda machine is much appreciated.
Bottom line, then is (1) not a single thing can be done to remedy this sorry state of affairs without amending our Constitution; and (2) it is absolutely no more of a challenge to force the convening of a Constitutional Convention to address the whole universe of our systemic political deficiencies than it is to force the passage of even a single constitutional amendment (that, given political realities, would be guaranteed to be of puny stature).
In opposition to a robust movement for the purpose of calling and successfully completing an event as historical and broadly watched as The Second American Constitutional Convention, I can just see the ads featuring a distinguished southern gentlemen (or "Bubba" type if the polling points in that direction) saying "You know, we can't really be expected to understand matters as complex as comprehensive governmental overhaul so I'm just going to mail my proxy to my local branch of Too Big to Fail Bank, or the nearest station of Too Big to Believe Oil and Service, or my very own local office of the Republican Party Machine, so I can go back to watching The Best Of The best Of and not have to worry".
I mean, if there are any more than the two choices of the status quo, or a sufficiently radical departure therefrom to create a true improvement in the greater society, I sure haven't heard anything in my sixty plus years about what they might be.