Sure that sounds fun in the hindsight machine. But if the Saints drafted a running back in the first round (who wasn't even the 1st RB drafted) the same off-season that they made AK the highest paid RB in the league, we would all have been scratching our heads. At the time Lat Murray was playing pretty darn well.
There have been reports that they did not like Jordan Love at all that year. which seems to be a poor evaluation, especially at that point of Drew's career. At the time, the head coach was saying he already had Drew's successor in the building.