sylph of void: to fix nothingness, or rewritten: to fill the void (commonly to fill an empty position) therefore, could a sylph of void fill a position the team is lacking? for example, if the session didn't have a time player for whatever reason they could fill it when needed?

You know, that’s an extremely clever way to twist the Classpect Definition, I like it. Given we do know Non-Time Players can use Time Machines, I bet at least they’d be able to go back and forth. Whether they can properly grasp Time Loops and not end up with a thousand dead Sylphs, now that’s another issue entirely.