Positions vs. Positionless Soccer

I want the U11 forwards/mids moving, overlapping, crossing over, confusing the defense, understanding and anticipating the action. They want positions, a "safe" place, organization, to simply wait for the ball.

Do I give in and allow them to play with these fixed positions and clear instructions on what to do in the most common situations? Or do I allow them to struggle with the chaos and let their minds begin to really understand the patterns? Or is it just too much to ask?

I see a good response in some players. This gives me hope that letting them sort through the chaos is potentially a good idea.

I've learned a lot over the last several years and continue to learn. I have to admit that my U7 team playing 4 v 4 with no positions, always has someone in the cover position even though its often not the same person. They actually connected on some passes this week. They even maintained separation when their teammate had the ball. Yet they still dribbled aggressively and pressured aggressively. I think I may have done a better job with them and they are handling the chaos even though they're much younger.

I'm still not sure.