My take from this is if WWE would take English seriously, he could actually get over very well just by singing like that before his matches. It would not be difficult to make him sort of like a Damien Sandow. He needs some polish on his ring work but since when the heck did that matter in this company? Especially when Jinder is WWE Champion and SDL's two workers are jobbing to him at Summer Slam and feuding with KO respectively.
As for Roode I think a brash, cocky babyface who knows he is so damn good and there is nothing you're gonna do about it will work. Fans who have never seen him before are gonna draw to him like moths to a flame. You don't craft a wrestler that much pageantry with his entrance without people taking immediate notice within 3 seconds. GLORIOUS Bobby Roode is one of those "can't possibly fail" gimmicks. You might as well get every drop of milk you can out of that cow. A babyface trifecta of Styles, Roode and Nakamura will work fantastic for SDL and I'd argue that if Roode remains a babyface it'll be the strongest babyface lineup Smackdown has had since Angle, Undertaker, Guerrero and a young John Cena in late 2003 to early 2004. Fans couldn't get enough of them and I think Bobby is going to be a great addition to SDL. Fans literally sing Roode and Nakamura's songs as they come out and they go ape **** over Styles. WWE needs to just run with these guys until they make Smackdown! great again. It helps that two of them (Styles and Nakamura) are on par with guys like Michaels, Hart and Angle in terms of putting on epic matches.
Now if Randy would turn heel that would really fill out the show well. You have 3 guys who bleed swag levels over 9000 and then a heartless cyborg who calls himself the viper. Which of these is not like the others?? Give us a volatile, curb stomping heel who will kill you if you look at him wrong and you have a great competitor for those babyfaces.