All the original problems that exist within CVE.
"Let's just reinvent the wheel!"
Yes, you have a dev background, which entitles you to an opinion, and you also have good intentions. This road is noble. However, the crux of this disaster is not technical, it's political. Maybe reinventing the wheel will be a huge success. Maybe it can wear the crown of free and open source for a while. But it's much more likely this fails as things become difficult to maintain, and you become tired, or poor, and are forced to stop, with nobody, or even worse, an enemy (this is an internationally critical database) controlling the database. So let's focus on solving the original funding disaster without jumping to forking and fracturing as a knee-jerk solution.