Maybe, but we don't know what Mitts will or won't be as of yet and Risto we already know what he is.
Kapanen, yea top 6 RW, but Kadri and Brown aren't just 3rd liners, they're 2 very good 3rd liners.
I'd give up possibility for the known to start winning some to be sure, but I understand why some wouldn't as well.
Unless Botterill acts, he could lose the advantage when it comes to risto, some of these talks being rumored will bare fruit. Both Toronto and Carolina getting better serves nothing for the Sabres, and a trade like the one mentioned does that for both.