The Knights have a first world problem, the D core is full of guys rated say 4-8 out of 10, but not enough stars and that can't be solved right now. There are no glaring holes, just spots where the team wishes it had a better option. So the typical TDL deals don't really work because you are either just giving up futures or dumping guys you don't want, but those aren't going to get you a quality top 4 you take into the future. Something like a deal for Dumba and maybe Petry could work, but I don't see most of these other deals as being real upgrades that changes the team's future. Martinez would be a nice player and certainly could draw in most games, but he's like 1 grade better than Merrill or Holden when those guys are getting regular time.
One issue I do have with the management (and no I'm not terribly bothered by the coaching change, I think Gallant's time would have been coming to an end anyways without a deep run this spring) is their telegraphing the message no rentals. Of course you can profess to not like them and everyone understands their downsides, but at the right price a guy like a Barrie for one season might be just what is needed so Hague and the other prospects at D get more time in Chicago. Or a solidifying third liner could overcome the Eakin black hole long enough to get Glass on solid footing, or maybe pass the baton to Krebs next year. Rentals don't always make sense, but to me this team does really feel like it could be elite with one or two additions and the pipeline and cap space coming is good enough to take the hit.