Still, BT nowadays is like wifi, people leave it turned on, so I don't see any sense in constantly showing the BT icon, even when not connected. You dont show wifi icon, when not connected, right?) Anyway, not a big deal.
Ok, another improvement I suggest you implement in future updates: please, turn green LED a bit earlier, say at 90%, not 100%. I used to have it like that on Essential PH-1 and it was super convenient. As you know, charging to 100% is not recommended for li-ion, I know lot of people, including me, who remove charger somewhere between 90 and 100, and since there is no charging animation on screen, it is wise to let user know that level 90 has been already reached by turning green LED, so he/she has time to remove the charger until it gets to full 100. Would be great, if you introduce this improvement! Thanks ahead! Cheers.