Just a minor thing - how hard would it be to add support for player characters as assembling machines ?
The default player character and/or others (for instance those from Bob's Character Classes...).

One use-case would be Sea Block's infinite & free "Forage for cellulose fiber" recipe, which Helmod mistakenly assigns an Assembling Machine 1 to, which can NOT actually craft it !
(So this would also fix a minor bug.)

The annoying thing is how this is not going to fit the "first-to-last" "Factory default level" preferences...

normally the player is in the list of machines.
I will have to check.

I found the bug on crafting-handonly recipe, player replaced by character
when there are nothing in the choose of factory on the recipe edition, it's not normal.