It "feels" better if we keep one of Couture or Hertl around for leadership, but as Hodge just said... Ruuta and Sturm have actually won cups, so... They just haven't developed as a prime prospect, otherwise they are likely very good role models.
I think we're already going to be historically bad for many years. It's a bit scary to strip it to the studs, but as we can see, we're now behind in the tank race for the second straight year because we didn't and it means come late 2020's we're less likely to have the star power AND depth of an Anaheim or Chicago. At least one of those teams will likely develop into a force of nature.
Trading Cooch, Hertl, or both simply gives us a better chance at Hagens or McKenna or whoever else in those drafts emerges as a franchise talent. Eklund stays on our team for 5 more years developing, and if he does so well, he's a key piece. If he doesn't, he gets traded away and the rebuild continues. We truly are in a very deep dark ravine right now, I think many of us see that but some don't quite realize how bad it is and will continue to be for another 3-5 seasons.