Hi,
You already have the "Import Indoor Images" tool that requires e57 files. E57 is the standard for the majority of indoor scanners that you might use as a source for "Generate floor plans from point clouds" . So why introduce the additional step of converting to LAS? Your tools should be consistent.
Or you could extend the lasd file format to support e57 files as well which would mean you could feed them into anything that support las datasets.
Thanks,
Marc