This is overly harsh to Rossi... but he suffers from the same faults as Jost. Small and not a good enough skater. There is more raw talent and I think he's quite a smart hockey player.. but not enough to overcome his deficits.
If you can get Zegras, he could solve that issue. It'll be warty until his defense comes around, but Bednar has shown he can handle that (Landy and MacK in the early years). If you get Fatty, he has all the requisite skills and ability now, you just have to deal with a contract later. Lindholm solves it for the year for sure... after is a large question with the contract he'd require and his regression. The Monahan, Henrique, Wennberg, etc group are just putting a bandaid on an arterial laceration.
Personally, I'd rather overpay and 'lose' a trade to get a 3-5 year solution like Zegras/Mitts.