I'm not sold on Myers as a top 4 D. If he's going to cost more than $5.5M on a longer term deal, then I would look to make a trade for better options. I just don't see him as a core D, even though I like and admire his approach.
Just my opinion but i like the idea of dealing Perreault for something small and keeping Myers for his last year. Then let him go somewhere another team can afford him.
Copp is a tough mins defensive 3rd liner, Tanev has proven himself a bit, Vesalainen will be able to fill in eventually. Cheap replacements are backfilled already. I guess to me Poolman is still a bit of an unknown.