[Harbinger86]

0.2x scale is the hard limit for shrinking across all NPCs, including followers. Growth is effectively infinite for all NPCs, including followers, at the moment - this may change to 3000x in the next update, as that seems to be the point where NPCs are getting so large that you cannot keep the entirety of their body in view no matter where you are. The player is still limited to up to 10x in size (which remains a considerable improvement over vanilla, which hard-locked the first-person camera at 1.0x by default).