Camp's plan would lower the tax brackets, although not excessively, but more importantly it actually confronts the many loopholes tax code. Some of the biggest, like the mortgage-tax deduction, would be removed. That's politically brave beyond most politicians these days, so you have to give it to Camp for his effort. This is the GOP first tax reform attempt in memory that can actually be called a tax plan, rather than a piece of conservative agitprop. It gives real detail to the cuts and difficult choices necessary to lower the highest tax bracket and the corporate tax. It explains how these tax cuts will be paid for, without the handwaving and mystical "economic growth from trickle-down effects will balance the budget" which characterized Paul Ryan and Romney's plans.
Naturally, other Republicans hated the plan. This leads to my favorite pundit/snark-machine Jonathan Chait's analysis;
Republican leaders like Mitch McConnell (“no hope”) and John Boehner (“blah blah blah blah”) have dismissed Camp’s plan as a utopian exercise, both because they fear its specific provisions will be used against Republicans, and also because they are soulless hacks.So predictably the plan has now been discarded and disowned by the GOP. As Robert Frost might have told us, Nothing Gold Can Stay.