re: Why Aren't There Any 7ft WRs?

The same reason every 6'6 tight end that has a sub 4.8 40 time doesn't dominate like gronkowski or kelce. I would be willing to bet if kansas city had 5 travis kelce's they would start at every wr position as well as tight end and fb. It's not that easy. There's a reason 5 ft 9 to 6 ft tall receivers in the NFL still exist, it's not because those owners don't want to win more football games.