Big thumbs up for the project. I am an end user of N900 for only a few months, and which is my first 'smartphone'. The open source nature and linux architecture is what had drawn me.
From its specs, Neo900 is definitely going to be THE device after N900.
My only small gripe about N900 is the battery life. I would wish Neo900 to have more battery life, if possible. Otherwise I will just carry an extra battery as I do now.
All the best.