Although this may attract developers initially which is the original question, this seems like an ineffective strategy for a business. In The Mythical Man Month, the author argues that one of the most important things in software architecture is conceptual integrity. Having many different architects cycle through seems like a great way to end up with too many different ideas in your systems and a poor conceptual integrity.

Maybe this could work for a short time at a startup, but I'd be curious to know your thoughts in response.