Which Game Series Should Be Revitalized Next?

It's no secret many sleeping IP's are not being put to use by their creators. Characters that were a staple in my childhood, may never see the light of day again, remaining simply as memories of the past. Series like Castlevania, Mega Man and Crash Bandicoot are just some of gaming's most fabled franchises, locked behind doors with a lost key. While some series did get remade for next gen consoles, it's always a wonder if or when we will see our favorite gaming series return to life.