Have you tried Jujutsu? If you want to make a better VCS, your baseline should be that, in my opinion, because it already deals with a lot of the Git pain points whilst be able to read and publish to Git repositories.
The idea of using git as a blob storage and building entire new machinery on top is definitely a worthy one. At this point though, the de-facto baseline is no doubt git. If git as a store withstands the abuse of jj and jj becomes the industry standard, then I would agree with you. Also, at that point they may drop git backend entirely just because of price/performance discrepancy. git is overweight for what it does, if they make it do only the bottom 20%, then things will get funny.
Still, many oddities of git are inevitable due to its underlying storage model, so it makes sense to explore other models too.
The idea of using git as a blob storage and building entire new machinery on top is definitely a worthy one. At this point though, the de-facto baseline is no doubt git. If git as a store withstands the abuse of jj and jj becomes the industry standard, then I would agree with you. Also, at that point they may drop git backend entirely just because of price/performance discrepancy. git is overweight for what it does, if they make it do only the bottom 20%, then things will get funny.
Still, many oddities of git are inevitable due to its underlying storage model, so it makes sense to explore other models too.