Unfortunately with mods like these it's often all or nothing. I originally intended to release New Vision package by package, but quickly realised it wasn't possible. If I ever needed to adjust a texture from another package I couldn't, because there'd be hundreds of people who wouldn't update who would then complain that their textures didn't look very good etc. - I mean, look at the downloads for New Vision (90,000) and then for the New Vision Hotfix (35,000).
Plus, no one on the team expected it to take this long. If they had, they might have set up a release model to favour rolling updates. But they didn't and to do so now would take even more time.