Eakin is an NHLer and Grigorenko is a prospect. It's not insane. I don't get the over the top support for an unproven asset. These guys are great assets when you're selling off expiring contracts and what not, but you're in a perpetual re-build if all you ever do is turn NHL assets into prospects. That's not what good teams do.
I get the unknown is sexy and what not, but there's just no reasonable explanation to turn a current 2nd/3rd line center into maybe (and there is a maybe ... you tend to assume every asset you like is sure thing) 2nd line center.
This is about upside. You don't sell Nichushkin for upside because not many have his upside. You probably don't sell Chiasson for upside unless his return fills a defensive hole and even still I'd rather trade Eakin before trading Chiasson. Eakin however is a 3C. The fact that he's our 2C is because we don't have anyone else to fill that spot not because his production and skills match that need.
He has a great amount of want to, drive, and relentlessness but actual tangible offensive skill to anchor a 2nd line and make his teammates better is a huge question mark. Sceviour could probably replace him without missing much of a beat. He'd just need an off-season to work on faceoffs and center positioning again. Having Eakin is nice but he's not a huge cog or a secondary scoring giant that keeping him outweighs the potential Grigorenko brings to the table.
On the other hand Grig's has immense offensive talent, great skill, and puck skills that put Eakin to shame. Which says a lot because Eakin is a decent puck handler. Grig has great vision and the passing skills to match. Unfortunately he was thrown into the NHL too soon. How Buffalo handled him was a shame but his production in juniors, at the world championships, and amongst his peers separates him from most other options.
I have no doubt Dallas would love to have Stastny or Grabovski but neither may choose to come to the Stars. If you get a chance to add that kind of talent to your roster and the cost comes at a decent but let's be real about Eakin's true value, then you have to do it. It's not like I'm advocating trading for a 30 year old center or even an 18 year old 3 seasons away. His junior team is in the playoffs and perhaps he'll got the route Dallas does and play for Buffalo's AHL team when they're done. He could be good to go starting next season or need some seasoning in the AHL but his timeframe is probably a year at most.
The Stars don't have anyone outside of perhaps Dickinson with his talent in the system. I count Shore a step below and both are a few years away. Grigorenko would be our best prospect and a guy you can pretty much pencil into the lineup sooner rather than later unless something catastrophic happens. I try not to think worse case scenarios and the same could be said about Eakin. This team has enough pieces that Eakin won't make or break the franchise. Grigorenko has the kind of talent that can transform our 2nd line. We've seen what kind of difference Seguin makes to this roster. I'm not in any way comparing the two but I am saying that when you slot the proper type of player into the proper role other players benefit as well.
If you trust your scouts and assuming his time in Buffalo hasn't ruined him (there's no reason to think that) then he's an upside gamble that could make a huge difference in just a few years. Maybe I'm wrong but he's the better player than Eakin in 3 years and if that's true why would you not make that trade? The step you may take back next year isn't as great as the step you may take forward when he's in the lineup in the future. This team still needs an infusion of talent. There are plenty of grinders and want to guys, but not enough players with his hockey IQ.