One of the keys to long term growth is innovation. One of the keys to innovation is sharing. When all sorts of different ideas are floating around and bumping into each other, chaos (and creativity) ensues. Let it happen and encourage it to happen in your absence through creative seating, facilities design, and social media. Working in groups is often more challenging but the product is often a more complete offering.
Though Lennon and McCartney are legendary for their creativity, perhaps there is a reason neither’s solo work did as well as when they worked together.