I was happy with the original purpose of Linux Mint as I saw it - a version of Ubuntu that had all of the difficult-to-install things pre-installed (java, flash, dvd support, etc). I am a huge fan of Bea, and I switched all of my Ubuntu desktops to it.
I really don't like the Bianca desktop, are you going to spend time continuing to develop Yet Another look and feel? It seems like a distraction to me.
Hopefully, it will always be easy to just use the standard Ubuntu environment.