So, do you expect the "Ace" to have a "strong ability" but simply overall, he's weaker?
Something like Sugar, where her ability was the "MOST HAX" among the Doffy crew, but she was also the weakest somewhat.
In the same way, Ace, can be generally representing number 1 as weakest under Calamities and all Numbers. But momentarily, or in specific situations, he can turn into an Ace that is ABOVE King in importance for the crew.
Do you think he will be that way? or as simply as weakest member, and nothing special about him?