"Is this straightforward" can't be figured in 10 minutes for the vast majority of projects. And if you are outsourcing to devs, "has the team done stuff like this" is going to take some time too. 10 minutes simply isn't enough time. Would you have the same thought about 1 minute? 5 minutes? At what point do you say "no, that isn't enough time?". I'll take a few hours as enough time for some reasonably small but not trivial number of projects as a %.