This is cool and actually useful. However I would love the opposite as well, to draw a vision of how the idea might work and what it might become. dog walking

This is cool and actually useful. However I would love the opposite as well, to draw a vision of how the idea might work and what it might become. dog walking marketplace -> act 1 - you start in SF, where people love dogs as much as kids (and think that's ok), after some cold start issues you get to 100k WAU WAU act 2 - people don't just use your app to coordinate about dogs, they also start renting each others stuff and use your payment features for convenience act 3 - expanding in major US cities was harder than anticipated, but investors love the idea (networks effects baby) and so you can buy a super bowl ad and reach 100M dog owners and walkers in one afternoon. You're engineers did a good job and you can sign everybody up with not issues...