Personally, I’ve always thought it made perfect sense that Boba Fett might be found hanging out in Jabba’s vicinity, since he obviously works for him at least some of the time. I therefore have no problem at all with his presence in the film, but each to his or her own in that regard.
However, I do feel his rather feeble end could certainly be improved, and so since Ady has said Boba will be staying in the film, I look forward to seeing what he decides to do in that regard.