Taxing consumption is stupid. It encourages people to save and hoard till the day they die, which defeats the purpose of money. The rich are the most capable of doing this, which big trust funds and investments. Also, the idea of a progressive consumption tax is mind-boggling. How can a sales tax be progressive? Right now, sales taxes are collected on point of sale, which is a flat (actually regressive) tax. Do you have to fill out everything you buy on some IRS form?
A better idea is to tax wealth. That will encourage people to spend, and drive the economy forward.
You'd tax it right at the point of sale. Buy dinner, see a movie, buy airline ticketc, etc. Tax added to the end like sales tax instantly. No more filing taxes every year. More money directly into your paycheck.