Unless we're planning on going with all righties except for Lindbohm, I don't think that's the way to look at it right now. With Pietrangelo, Shattenkirk, Schmaltz and even Parayko, I think Vannelli could very well be the odd man out in the future. If we have 3-4 better RH puck movers, couldn't he be redundant? I'm not too high on him like I am Schmaltz, but it's too early to tell.
I wouldn't just give Edmundson away. He shouldn't be lumped with Hakanpaa either. Edmundson is only 21, and has missed a year up until now due to the back injury, so he's really still in his first pro season for the most part. He could be a solid 3rd-pairing defenseman that provides a certain role of nastiness. Or maybe Parayko and Lindbohm will give us that aspect, we'll see.
Edmundson obviously isn't a guy you hang onto to hold up a deal that can help us now, but he's definitely not a bust.
Maybe Edmonton will be intrigued with taking Paajarvi as a throw in along with another prospect.