Mix org and md files in a single graph?

Given org rendering support is, at the moment, not as good as md (i.e heading support for org is subpar - see Headings don't work in org-mode, but work in markdown · Issue #6792 · logseq/logseq · GitHub) I thought about using org mostly for TODO lists that also need to be shared with my emacs-based systems, and leave most of my “wiki” in md, for the better UX around formatting. However, it seems logseq doesn’t support mixing org and md files in the same graph. Would that be hard to implement?

As an alternative solution, could we get the same rendering capabilities for org? Especially more easily supporting headings.