Unrelated - almost.

Ideally, we would also need a feature for editing the exported .lxm/.lxo/.lxs files, to change settings.

Imagine all of a sudden I want to change bidirectional to path; It would be nicer if, instead of redoing the whole export (including translation of materials and lights), I could just reload the exported files and change the Integrator parameter. It's a line in the file, so it's not complicated, but it always looks better (and more professional) when it's done through a GUI than when you need to fire up Notepad.

I know it is trivial to code, but it should better be planned from the beginning than added afterwards.