“It’s time for a Constitutional Convention to fix these problems.”
At this point, that in fact is the only fix. And essentially the only possibility of effecting that is to hijack the GOP 100% or abandon it and form a Constitutional Party whose sole purpose is taking all the state houses and governors for the sole purpose of establishing said Constitutional Convention.
Most likely, conditions will not be ripe for such a situation until the economy collapses, which should happen in about 3 years. At that point, however, a variety of extremist parties will arise from the chaos, both on the left and on the right, and it becomes very unpredictable as to who will win out.
Starve that beast. If we'd started avoiding everything with an attached tax in 2008, people would be screaming at the top of their lungs to get rid of the democrats by now.