Thanks for posting these Mike.
P3 aftermarket chargers no worky with P4 batteries unfortunately. It's a shame really as all that would need to be changed are the connectors.
Naw, those loops are to hang the drone from the ceiling among your drone collection as you go through each yearly model release. It allows the craft to be retired to the ceiling, for the memories of where you've been together. Aw...My guess is the clips are for quick-connect prop guards.