Love this idea and am just signed up. Thanks for the promo code! Also, I really like your blog post about shipping faster: https://greptile.com/blog/ship-faster. Shipping code is so fun that we should all be looking for ways to do more of it.
I like the problem statement in the essay, but it's generally more effective to give context instead of more precise instructions. The people you work with are smart and capable -- if you tell them what problem you're trying to solve, they will adjust accordingly. Plus, giving context fills in so many more gaps than just the time and effort expectations.