Jameis is clearly high risk (but also potentially high reward). I may be wrong but after the public embarrassment of the Jonathan Martin bullying investigation and the Offensive Line Coach snorting coke on the phone to his Vegas hooker/girlfriend (in between his meetings), etc - I think that Stephen Ross decreed that he wanted higher character people throughout his football operation.
For the past 7 years, with Ryan Tannehill as our QB, the one thing that we could count on was that our QB would not get into any off the field controversy. Hell, Ryan wouldn't even fart if the media were sniffing around.
To transition from the squeakiest of clean-cut QBs to the naughtiest with a long track record of poor judgement, would be a very big step. The question is whether the Dolphins organization is so desperate for more wins that it is prepared to make that leap.
I doubt it.