It looks like Bambu has said an enclosure for the P1P is a go following some of their instructions like buying their cable chain, P1P heavy duty toolhead cable, and MC fan:
Is the firmware update date so that the MC Fan will no spin if installed? Bambu Lab representative, please respond if possible. This is based on the following Wiki post:
They tell you what g-code and where to put it so no need to have it in firmware. And it works fine I am running a MC fan right now with the ARC enclosure.