I've made a similar move and have no regrets. Lost the title, but gained valuable experience. Over time, I have noticed that I care less about titles and more a

I've made a similar move and have no regrets. Lost the title, but gained valuable experience. Over time, I have noticed that I care less about titles and more about the work I do. No doubt that helping a startup go through a period of hypergrowth (still in the middle of it!) will be tremendously more beneficial to me long-term than overseeing a tiny department year in, year out.