Yeah I think the directions are quite different. Both are improving user experience (either commands/behaviour with pijul or speed with Eden) but pijul is distributed with some efforts to improve algorithms but a bigger focus on improving semantics (making it more natural in some sense and more correct in another) whereas Eden is more centralising (the thing large companies want for their repo is branching not decentralisation, but DVCSes give the former mostly via the latter (I get that branches are a first class thing in git but much of their technical implementation can follow from things git must have to be distributed)) with a focus on massive size.

One thing I recall was an effort from pijul to make blaming a file run in O(n log h) where n is the size of the file and h is the size of the (repo or file, I’m not sure) history. I wonder if Eden will also have improved blame performance. I noticed they mentioned large histories but maybe it is still linear in the history size of the file. (The way hg works gives I think O(nh) where h is the size of the file history, which he stores per-file rather than per-commit like git).