I voted for Dermott, and here's why...
It's between Liljegren, Kapanen, and Dermott, clearly for the top-3.
That's understood.
Liljegren has the excitement of having contended for #1 overall until he got injured, and yes, that counts for something, but he has yet to prove anything. He's not going to walk into the NHL next season. If he comes out and has a dominant +1 year, then he's belongs at the top, but right now, it's still something we hope for. He might not even play in the NHL ever.
Kapanen has proven more, and will be most likely an NHL contributor. Is Liljegren's ceiling higher? Probably... to a degree... Kap could still land anywhere between being a 30 point and a 70 point winger. It's highly likely he will be something in that range.
Dermott was so good down the stretch last year, that he simply should not be overlooked. It is for this reason i feel he is #1. The way his game took off last year after coming back from injury had both fan scouts, and real scouts alike pointing to him as a likely top-4 D-man as soon as this season and if not immediately, then certainly by next season. In fact, it would be a real step back at this point if he doesn't play regular minutes in the NHL, with his floor being #5. Furthermore, based on his progress last year, there's still a very real chance that he tops out as a 2-way #2/#3 on a contending team and plays for many years. He's going to be a VERY valuable player for many years.
Liljegren simply is still much more of a hopeful to reach that level, even though there's an outside tease that he could be a #1. And Kap, even in a best case scenario, tops out a little less in value than either.
Anyway, just my two cents.
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Add JD Greenway, because he got a lot of praise last year from professionals.