Yes, he will be signed... And Renamed Bastion Booger 2.0... And be treated just as well.
I love Steen, but he doesn't fit that mold. He'd do better to take his talents to Japan (if he begins working a much stronger style, his indy work I am sure is already circulating in that region) or Heaven forbid TNA. I don't think TNA would use him proper either, but I think he has a better chance for success in that promotion that with WWE. Then again, I said Moxley had a better shot with TNA because he could have more control over his character, but I guess it's one of those "we'll see" type things. People like Steen and Callihan, in my opinion, are better off staying out of the WWE because they won't be allowed the creative liberties that they have with their characters now, hence they won't be as interesting.