Honestly, it depends on what you’re going for. The questions still get reinforced either way, but there’s going to be more of a divide in a group between those who do or don’t grind all of their movement items early on so they never need to do it again.
I voted interaction system because interaction systems are better for the format of creative. What I mean by that is in a game like DLD, you can answer questions for energy, making you move, and the movement part is interesting (jumping). But, with creative, we can’t make people move in fun ways. I think it would make your game a little bit boring. You could also combine the two and do both!