Stafford's not scoring goals right now, but we'd have to get another top-6 wing in UFA if we make this deal. It'd be unreasonable to expect Tropp or a 20 year-old Armia to take on that role next season. (As you can see, I expect little from Leino.)
I'd prefer to collect a couple 2nd rounders in deals for Regehr and Leo, and then flip them for Bernier. Besides draft pedigree, I don't see how Bernier warrants a higher price than Nashville got for Lindback--essentially, picks 37 and 50 for Lindback and a 7th rounder--and you could probably even argue Lindback's Nashville pedigree and size negates any advantages Bernier's draft position has.
I said it a few weeks ago, if Darcy sees a good package for Miller and thinks he can nab a future starter, Bernier seems to be right up his alley. He loves draft pedigree, and Bernier was, at one time, a name brand. Assuming Toronto wishes to proceed with Reimer/Scrivens, and assuming further that LAK would like to send Bernier east, I think the only other EC teams who are in need of a future starter are NJ and possibly Philly (if they buy out Bryz).