If Tank's mission for his career is to preserve his unbeaten record then I reckon that he is only in this sport to make some money for retirement. He has the talent to create a legacy, however, his motivation will stop from doing this. There are only very few fighters who will take risks to become the greatest. Pacman in boxing and Khabib in MMA are certainly my favorite choices.
Everyone though is here for the business of making big money until they retired. Floyd has set that precedent already, there could be some who chases for legacy, but majority including Tank Davis wanted to be the next Floyd. But it's hard to blame them, they can just give us the reasons that they put their lives on the line when they fight and so they deserved to be paid more.
I do agree, Pacman's mindset is different, that's why he achieved greatness even though he has a lot of lost in his record. Khabib retired undefeated, but it's more on his mentality as his father died and he can go thru MMA without his father in his corner.
These two are champions who have a good reputation from the start. I mean, they are exciting to watch, unlike other self-proclaimed great boxers or MMA fighters, but in reality, the fans are not entertained when they fight. They are a good example of fighters who are willing to risk everything to be great; money is just next for them.
Hopefully though, we can see Tank stepping his game and fighting the champion in 135 lbs like Shakur Stevenson and the winner here.
That would be fun to watch. Although I can say that Tank is good, Shakur seems to not have any weaknesses based on his last fights, so it will be tough for Tank to win here and on how to land his power against a very smart and quick boxer.