GetEditedElementInstancesInfos now optimized as well. Forgotten because not using [R.I.P]LibraryResolver, but still XSLT compiling was hapenning on each call.

<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot URI_location="LOCAL://">
  <TargetType/>
  <Libraries Enable_SVGUI_Library="false"/>
</BeremizRoot>