The idea of having more Ace content is Heart-warming, I still think Ace was never done justice by Oda and it would be really nice if we get to see him in a few more chapters.
However, I don’t like the idea of resurrection or revival. One piece has few deaths to begin with and doing such a move will only make things look forced and senseless.
Do I like Ace being back as flashbacks or special chapter : Yes.
do I like Ace being Revived in the current line of events : No.