I get not wanting to have duplicates, but March is way too late for TOTY. March would have been fine if it was Position Heroes, but not for a program that's essentially the All Pro team that was already announced. This is the time of year when we should get tons of content since the NFL season is coming to an end and most of the player base will quit the game soon.
On the flip side, TOTY is a popular promo that could entice some people to play later after the Super Bowl. It also provides a lot of high end cards that will help bridge the gap some until Sugar Rush. However, they could have filled that gap with another promo like Backyard Ballers, GG part 2, Position Heroes, etc. instead.