region mesh/tet implementation

The LIGGGHTS 3.3.0 release announcement states: "Also made an important improvement to region mesh/tet. The all_in yes feature was implemented, and some algorithms necessary for particle insertions have been improved considerably. You should see a speed-up when using tet meshes for insertion."

Is this feature fully implemented ? All_in seems to be only an option for "fix insert".

Inspecting the code reveals that a mesh/tet region always enforces the caluclation of the corresponding surface of the region

tri_mesh.useAsInsertionMesh(false);
build_neighs();
build_surface();
tri_mesh.initalSetup();

which seems required for the use of the "all_in" feature for particle insertion. However, it would be desirable to prevent these calculations if a region mesh/tet is used without the intention to ever use "all_in yes".

Is it intended (and possible) to provide an additional option for the defintion of region mesh/tet that surpresses the use of "all_in yes" and hence to avoid the aforementioned calculations.