Yeah pretty much, you can edit the values if you open it with the e4pViewer
You can do this with the blender plugin already, only the frequencies are propably best set in the editor. Of course one could do more here, however I believe the required effort would not realy be worth the gains.
Gotcha, I’ll take a look at the EP4 viewer, but I’ve never used Blender before so I’m not sure it’ll be worth the hassle. Still, I’ll poke around and see if anything stands out.