I too place a high value on creative ideas, and meditation is definitly the most fertile ocean of deep ideas. However, I don't stop to write them down during meditation. Whatever happens in meditation, I simply allow that to be okay.
What I do, is set an intention to remember all the great ideas that might happen to show up during meditation. Then what starts happening is the ideas don't show up in the meditation - but immediately after, which sparks an intense jump into the flow state - and I just write and write, and new ideas are miraculously available as I type. Very cool.