That is not a bad idea.
Here are the shfit numbers by year since Joe Maddon reinvented the thing just to explore this shift thing a bit more.
2011, 2350 shifts
2012, 4577
2013, 6882
2014, 13,297
2015, 17,826
2016, 28,130
2017 (through sept 10) 27,187
That is just ridiculous and it robs away from exciting play unless you always think hitting the ball over the shift or around it is exciting. If the hitter hits the ball through a big hole away from the shifted infield then a fielder does not even make an attempt at fielding the ball. He is too far away from it. If the ball is hit into the shifted infield it is practically hit right at somebody. So you rob away all those plays that reward an infielder's speed and quickness both left and right, his glove dexterity, his ability to throw from awkward positions and replace that either with no play made on the ball at all or a play that I could make! All to encourage hitters to hit the ball in the air in effect an effort to mitigate the effect of the shift.
It would be so stupid easy to rule change the shift back to something more normal and less pervasive that it is clear the only reason MLB won't do it is because it does not want to do it.