Part of the problem is that tax season has been compressed from 14 weeks to 8 weeks. When brokers don't issue 1099s until February 15 (often, corrected by March 15) there is very little work in January and only easy stuff in early February.  For generations, IRS has indoctrinated people into meeting the April 15 deadline.  Avoiding extensions is irrational, for many taxpayers, but old habits die hard.  

Reduce the filing window by 40% and you reduce the income and profit by that much also.  And then half the country has to worry about snowstorms while trying to "make hay while the sun shines."  Watch your step, you have painted yourself into a corner.