When you say "not much importance", since last year, I said all I really want is Majin Vegeta and Mystic Gohan, and would be set for that arc, if that counts? I really want a regular Gohan, and don't want anymore tiny figures. I don't have a SSJ Vegeta, and my second favorite character, I want a fully decked out version. The reason I said three was because it would weed away characters that would be tied to others, unless they were like a pair like 18, but they would take up 2 of 3 releases a year, and you guys might not want that if you're wanting certain heroes more. I started writing mine, and then realized how tough it was, since they're tied to other characters. I was going to pick Dr. Gero, since he's one of my favorite villains, but as much as I like him, I rather go with characters, aesthetically more interesting and I could use more for displays. I went through the same thought process as you Silrian, with eliminating ones that relied on others and such. I like every arc better than the last, except the Boo arc, so the Freeza arc is also my second favorite, but I don't think there's much chance.
16, I didn't think of, but I say he is. He wanted to kill Goku and still said he wanted to even after he allied with the heroes. So Majin Vegeta, Imperfect Cell, and Nappa are my most wanted villains.
My must haves are Majin Vegeta, Post Time Chamber Trunks, Mystic Gohan, and Saiyan Saga Goku.