A great use of Layout conversion to Block Def and paste it to Model is something I call Plot to DWG, I mean the same feature than DWG to PDF, for the same motive CHSPACE and LAYOUTtoDWG is discarded.
I did a review for:
1 LayoutsToDwg
2 Layouts2Dwg
3 LXA
4 LXAv2
all of they are awesome for individual drawing with layouts, but:
1 and 2 just export the same drawing with a unique layout.
3 and 4 cut the plan but have problems with xclipped block reference and external references:
https://forums.autodesk.com/t5/autocad-forum/publish-layout-to-dwg/td-p/9565819the main problem is to convert a viewport in xclip, for this motive si request for help, I did not found solution, so maybe a simple LISP for convert Layouts to Block defintion could solve this.