Tbh, he might by the only piece that really fits.
They don't need a goaltender.
They don't need any LD; they don't need any PP dmen.
They need forwards of pretty much every stripe other than attacking centre but given Domi's quality and pedigree, they'd be aiming high. Maybe if they had no other offers you could make them go for Rust, Sheahan, Sheary type guys if they really wanted to deal. Depends on how much Tocchet likes them, but its pretty unsure. At which point we're talking Sprong and Kessel that the Pens are willing to move. And it is unknown whether The Phil fancies it.
Of course, this is where I hope the Domi talk comes to nothing... but if they do trade Sprong then, depending on the add, there are worse ideas.
I'm one of the biggest Sprong fans on here and I'd be completely happy if they trade him for Domi. That's the kind of move they should be making if they're moving Sprong, trading a guy from a position of strength (RW) for a similar player in a position of weakness (the good suggestions have been RD or LW). All of these other suggestions don't make more sense than the Penguins trading Sprong or the Coyotes wanting Sprong. The only other suggestion that makes some sense is Rust for Domi, but the Penguins aren't going to trade Rust before they'd trade Sprong and the Coyotes would probably want Sprong more than Rust anyway. Jarry doesn't fill a need for them, Sheary isn't good enough to be the main piece for Domi and they're not going to want late picks or crappy prospects for Domi.
The Coyotes need a shoot first goalscoring RWer, according to their fans. From looking at their roster, I'd believe that too. They had 1 20 goal scorer last year (Keller) and seem like they have a lot more playmaking talent than goal scoring talent. They are also much weaker on RW than on LW, with having Keller, Domi and Perlini as top-9 LWers but only having Fischer and Panik as top-9 RWers. Sprong is pretty much the exact player they're looking for, he's the same age as their core, he's exactly the kind of player they need and he's NHL ready. It also makes a lot of sense for why the Penguins would trade Sprong, because:
1. They're a win now team and Domi is better right now than Sprong
2. Sprong seems to have some issues with the organization, specifically Sullivan
3. The Penguins are already really deep at RW and they have arguably 3 established top-6 RWers
4. The Penguins aren't hurting for Sprong's PP skills because they have Kessel
So I don't really get why people are against trading Sprong for Domi. Domi's the better player right now, fills more of a need and likely won't be on the coach's **** list. Sprong doesn't really bring anything that the Penguins lack or need. Sprong makes a lot of sense to use as a valuable trade chip right now to fill some other need on the team, unless you're trading Kessel this offseason.