I suspect there is a deliberate intention from the devs to keep away from a ‘shared’ storage, ie a multiple chests that can access a single large storage area.
But if we had warp chests that were fueled by oort, I think that would be in keeping with the feel of the game?
Without fuel it could act as a normal large storage, but if it’s fuelled you can access your other fuelled storage.
Maybe could also follow beacon permissions, so if char 1 has permissions on beacon 1 and 2, and char 2 has permissions on beacon 1 and 2, then warp chest placed in beacon 1 and 2 are linked and inventory for both can be accessed by char 1 and 2 in beacon 1 and 2.