Keep in mind SY was what, 32 when they first won in his time. But, yes, they will be the ones to build around.
Edit: Note to self, read the whole thread before posting a reply
Agree if Larks wins a cup with the Wings it will be when Ray, Seider, and Ed are in their primes not his. Its why we have to hope Danielson hits at a Larkin level or we can trade for a #1 center at some point. If things work out well I think that true contention windows opens when Seider is around 26/27, which puts Larkin at 30/31.
The 15 should definitely be on the table for a forward in that early 20s range. Ideally someone in between Larks and Ray. That helps build to that Seider window. Kasper only leaves if we are dealing for a MAJOR piece. Like if we were to deal for a Brady Tkachuk (very unlikely) type player or a high end center. You aren't trading him for a 20 goal winger, because he plays the exact type of game we wish a guy like Ras would play and is very valuable come playoff time. I think D could be addressed in UFA with someone like a Roy or Pesce, but I see very little offensively that interests me.
I think long term giving Seider a more defensively responsible partner will allow his physical and offensive game to flourish. He has had to cover too much for every partner he has had, and it takes away from his ability to roam offensively and size up any open ice hits. I think Aljo could be this guy in the future as he seems to play a really solid defensive game, and be Walman's replacement. He's never going to be a Hughes, Makar, or Hedman offensively but I think he could be a consistent 50 pt guy with a physical edge and solid defense. He just needs someone who is going to be the 1st guy back instead of him always being that guy. The guy he has always reminded me of stylistically is Vladdy, without the same level of meaness and more offensive instinct.