Definitely. Shades of grey with his return (if it is actually happening, which I think is really pretty unlikely)--he wouldn't be an outright villain, just misguided in what he thinks is right. Especially since he is Peter's clone, if he is written with the same new characterization as Peter during Slott's tenure--that of guilt over any death--then it makes sense that he would use his scientific acumen along with the instruments of his own creation to try and cheat/defeat death.