By Tzvi Machlin Tanking is a bit of a sensitive topic in NFL circles given the massive benefits that being bad for just one year can have for the future of their franchise via the NFL Draft. But over the past couple of days, serious allegations of blatant tanking have come to the forefront. On Wednesday, Mike Florio of ProFootballTalk called on the NFL to formally investigate allegations of tanking against the Miami Dolphins and Cleveland Browns. Former head coaches Brian Flores and Hue Jackson have claimed that they were offered bonuses to lose games to improve draft position. Flores claimed …