I will just come out and say it now. This gimmick will need saved in less than 3 months from now. However, I have an idea that would alter this character and allow it to take off. What we know of him is simple and very obvious. The gimmick hasn't been done in great detail, but I get it. He still uses the line "Everything you know is about to change". I find that interesting because it was a great line that he used as Leo Kruger. I loved Kruger, but I couldn't stand his image or presentation.
Does Adam Rose have a Dark Side? I know you are probably wondering why I am even suggesting this. I ask this because I feel that Ray Leppan is great at playing the Dark Character. My suggestion is that Adam Rose turns on his Exotic Express and blows the bus up live on Raw the same way they did with Vince and the Limousine incident. Except this idea doesn't get ruined and we know that Adam Rose blows up the vehicle. Just to keep it PG, Adam Rose doesn't know that a certain member of his Party Crew knew of this all along and knew that Rose was up to something awful. They barely escape the bus in time.
Perhaps Adam Rose tells the world that he blew the Exotic Express to pieces because he loves destruction, pain, and envies the darker side of being human. A total psychopath in the flesh and very delusional like Wyatt. Rose explains that he is a man of privilege and deserves what ever it is he wants. Adam explains that one day he may want the WWE United States title and then the next day he may want to taste the blood, sweat, and tears of his next opponent. Just a sick man with the desire to cause pain. Carefully scouting his next prey and attack. Simple, that's it. Give him elaborate, but dark vignettes whenever he is feuding with someone like they have done so many times in the past. Give him an elaborate and dark entrance. Leppan is the perfect dark character.