I'm gonna go way out on a limb and say they take Johanson, bolstering their strength down the middle. If he develops well and they hang on to Vinny and Stamkos, they have a deadly threesome up the middle, with the option to trade from a position of major strength. If he doesn't bring his scoring touch to the NHL level, they get a checking center who can chip in offensively. They need to make this draft count, and a guy like Connolly, who has the potential for an injury plagued career, could end up being a bust. TB might see Johanson as a player who can have an impact in various parts of the lineup.
I know it's a stretch, but hey, stranger things have happened.