Having 6 people on a project like that sounds like why it failed. If you're not going to have a manager, one or two people seems like the correct team size. m

Having 6 people on a project like that sounds like why it failed. If you're not going to have a manager, one or two people seems like the correct team size. maybe 2.5 (bringing in outside design help for small parts of a mostly-infrastructure product, or someone to do docs, or integrating with an external system.)