Interesting numbers billyg...Everything is purely speculation, so I can judge the new engine's effect on attrition only based on the comments within my leagues. With my 3 D1 leagues, we've lost seven owners combined who said they quit because of the engine. Most of those were multiple team coaches.
And I completely agree that the marketing is non-existent. I played Strat-O-Matic baseball on The Sporting News website for a long time and stumbled onto this site because someone in one of my leagues over there told me about it. Otherwise, I don't know if I would have ever found it.