The best you can hope for, is visibility of the real cost of government providing incentive, and removal of government out of family finances (as with a Retail Sales Tax instead of income tax).
The electorate has to push for cuts in programs before there can ever be a real reduction in government.
When people think positively of a flat tax, they also mentally intend that their overall level of taxation will decrease.
Unfortunately, that intention is not shared by those who enact tax systems. Though the impression is definitely fostered to build support for the idea.
Whenever politicians are talking tax "cuts" it behooves one to start looking for the pea hiding under another shell.
As it has been said many times before, "The devil is in the details." That is the most true in the case of taxation and tax "reform".