Seeing as Finale and Sibelius have (at least compared to you) massive amounts of international support and finances behind them, as well as decades of experience and development, not to mention full time professional development and support staffs, I find it hard to believe that working alone YOU of all people are able to make anything close to a superior product, or even an inferior product with features not included in these professional level programs. Couple that with the fact that these programs have browser plugins that you should easily be able to integrate into the website, I fail to see the point of this and I am very skeptical of the possibilities here.
I predict it to be one more failure in your distinguished career of failures.
And for the love of God, you still have that god awful tacky donkey banner at the top of the website. You are the kitsch king, Michael.