I fondly remember a very collaborative team I was part of more than a decade ago. Our boss used to gather us together regularly and discuss upcoming activities and opportunities.
His goal was to assign work in a very democratic way. The team would somehow collectively come up with the best assignments. This approach did not elicit a lot of volunteers and often ended up with our boss just making the assignments.
Will the Spaghetti Stick?
Early on as I learned to cook I was taught to test when spaghetti was ready by throwing it against the wall. It stuck, it was ready (spaghetti was a favorite dish of mine because it was so easy to prepare).
Tossing the ball (and hoping it will stick) might lead to successful outcomes, but passing the ball in a planned and scheduled way is far more likely to work well.
My aforementioned boss often tossed the ball into our court and regularly found it just bounced back. His choice to work as a thoroughly integrated team through full-on involvement of everyone was well-intentioned if not well executed.
Rigidity Sucks
Setting the approach in stone and firing the ball at the troops demanding specific action or just tossing the ball and praying are two useful analogies to illustrate the best approach might well be somewhere in the middle.
Be prepared. Do some planning advance but include both flexibility and real (not lip service) opportunity for feedback before casting the approach in stone.
Group determinations are the hardest to achieve but usually, they are the most satisfying.