Regarding Ryan Sproul, I think that he, and Marchenko for that matter, would less likely be as threatened by Russo as Jensen probably is.
Doubt it, watch Jensen skate.... Sproul is beneath Jensen at this point and considerably so. I hope Sproul bounces back, but Jensen was the #1 D in terms of minutes for the back-half of last season on most nights for the Griffins. A guy Blashill leaned on heavily, more so than Ouellet, Paetsch, Lashoff and the rest of them on most nights.
Jensen actually has NHL gifts too, so while the upside on some of the guys is worth it, in particular Sproul, but they weren't passed by somebody you could never see playing at the NHL level.
I like the Russo signing, the Griffins are an extremely loaded team right now, kind of stinks for those that would like to see how heavy Nedomlel could play. Maybe somebody will take a flier on Lashoff for free, like a Buffalo that needs somebody on the left-side. He will be exposed to waivers again, hard to see him getting claimed, but they have an insane amount of depth for an AHL team. Toledo is also likely to be ridiculous in terms of the talent they ice for their level.