as
@RogueGuy said, swappable batteries is a must,
Make shallower and smaller diameter bowls/pods, no need for bigger or different battery,
....pods tray will need to be remade too...
..... maybe heater casing and coil needs to be remade, smaller, or maybe not, probably will vape very well the outer ring of the pod, or the whole pod, who knows...
.....but keep same concept,
.....same battery size, maybe more juice,
.....maybe they can shave some size, overall volume too...
....more presets, around 15 imo, from 350F to 500F, 10F or 5F increments,
....blinking while heating, the color of the selected preset as many users have noted,
....extra screens, at bottom and top of pod, but something well done, to avoid extra cleaning,