Inside Memgraph, variable expand by default is using DFS, wouldn't it be better if a user code explicitly specify what's the expansions policy? I've found the following example MATCH (x {id: 587})-[edge_list:Type *dfs..10]-(y {id: 963}) RETURN *; in another question.
Being explicit would make much more sense to me.
Yes, it makes more sense and it should be like that. It looks like the issue has already been raised and Memgraph is working on it (https://github.com/memgraph/memgraph/issues/377).