That's a great point. The perspective is much different between hiring people to do the best job possible in certain areas of your product/company (design, copywriting, accounting, etc.), and getting external advice from peers.
You're mentioning a piece of advice that changes your product, but even just having someone like the 37signals team say "sounds like a good idea", "looks good" can be enough for someone to keep going.
You're mentioning a piece of advice that changes your product, but even just having someone like the 37signals team say "sounds like a good idea", "looks good" can be enough for someone to keep going.