1) Agreed. I wish more of these systems had code nodes that you can just write expressions in. Sadly the big contenders are tuning for a subset of functionali

1) Agreed. I wish more of these systems had code nodes that you can just write expressions in. Sadly the big contenders are tuning for a subset of functionality so expression nodes are often an after thought or a mismatch because the graph system doesn't mix with the compiled language underneath. 2) I think this is both unsolvable but can be mitigated with more tooling. The advantage of the graph systems is exactly because they are non-linear. But code is easier to read and understand linearly. I hope one of these graph systems adds an "unrolled" debug view. It would be nice to read the execution of the past n nodes linearly in a transient visual log. The common "highlighted path" view is good but incomplete. 3) I disagree. We're all just used to doing the scoping passively when reading functions. I think the explicit scoping of the dependency graph is often much more clear. Buuut... the explicit graphs edges make branches tedious as you have duplicated dependencies drawn all through the branch. Perhaps a branch paradigm where the many deps enter the branch node and are then forwarded to the branches or even some kind of implicit scoping would make this better. 4) Yes, loops are a challenge because of the common UX used. The hot path highlighting falls apart when you loop over the same set of nodes. Again, an unrolled view might be useful. There's also the concept of dropping some loop types and focusing on for-each and batch/collection processing. I think passing lists or iterating over them solves some of the loop issues. ...buuuttt, many graph systems don't seamlessly handle both lists and single items. Maybe some Lisp influence would help. Graph systems could use something as simple and easy as mapcar. 5) I don't know...most graph systems I've played with had an easier grasp of state because dependencies were so clear. Still, many graphs I see resort to graph scope and global scope. Would be interesting to see state scoped to some group of nodes.