It depends on how powerful the constructs are, and how you use it, really. 

If you go and draw, say, every comic book, video game, and movie character you can think of, and they have all their powers somehow, yes. Completely overpowered and IMO, kind of random and silly.

But if it you use the abilities sensibly and it makes sense in game, it can be quite interesting. But my concern with a powerset like that is that it can easily fall into camp, which wouldn't quite fit with this setting. But if it's done right, it can absolutely work.