I think standard practice for most altcoins is one main dev. There's a handful that may have more than one dev, but that is atypical. Some altcoins don't even have a dedicated dev. They are primarily in it for the marketing angle and the dev is contract to get the QT wallet up to date. We are blessed to have such a competent dev -- one that has both technical, business, and strategy acumen. It is rare to find someone who has all three.