Some day ago when i uploading my new photogrammetry scan to SketchFab i found that now we don't have 3Dscan category. And now only have this (btw this category not visible for this moment in object properties):
Cars & vehicles
Places & scenes
Animals & Creatures
Products & Technology
Science, Nature & Education
I understand your idea that most of 3Dscan is Heritage. Just because is more interesting scan some nice statue than old shoes or stone. But this still not so rare. Or if i scan myself, this is just 3Dscan of myself but not "Character". Or my lovely Crocs or Keen is not Product but still just 3Dscan of them. Or Stone Photogrammetry is 3Dscan or may be game object, or may be just a way to catch textures for 3D work.
Also you miss one scenario. How users can use your site.
I don't think this is so rare. But I prefer choose 3Dscan category and check what software or hardware users used. Sometime i can find new tool (like 3Digify) that have good potential as competitor for some known photogrammetry or 3dscan tools.
So,please, can you put back 3Dscan category?