This is the thing, though. Top-6 rentals typically garner bottom or middle-6 prospects in return. That's the nature of the rental itself. Players don't go for what their play would indicate they're truly worth. But at the deadline, they go for more than earlier in the same season, because the pressure is on and the cap hit itself is mitigated. Last year's top rental trade got a 1st, a good prospect, and ok prospect, and a conditional 1st. And Duchene was over a PPG at that point. Stone was also a rental, but his trade came with an extension, so he actually garnered a real top prospect.
There's nothing wrong with getting those types of players, since you really need to fill out a whole roster. Getting the more talented players either happens at the draft, through other types of trades... and also through free agency.
Given that, I'm fine getting a middle-6 type of prospect like Kaut or Beecher. Hopefully, it also includes a youngish 3rd line type of player like Jost or Heinen as well, but I doubt it. Our biggest forward problem isn't talented top-6ers right now. It's depth. I think that's still true even after we trade Kreider.
To be clear, if Kreider was willing to sign a mid-term deal, I'd be all over it.