That is a good idea, I have seen another new display from DALY but I don't think its as good as the one you have, seems to only display basic stuff.
i was thinking of getting a LCD for the hose battery but would have to run the cable through the wall and display inside, not sure about doing that yet, The cable can be extended, I have crimped those little JST connector sockets before without a proper tool, it was a PITA but doable.

They make a smaller unit with limited settings, so that must be the one you have.

It's so nice to just switch between any of the units and get almost instant information on the LCD. The PC SW on a 10" tablet works just as fast updating the main data screen when switching between devices.

I don't use the charge indicator Light boards any more, they are not needed.

I have a single Activate/Suspend "Push button" switch to handle all BMS units, it lights if the selected BMS is Active, it works the same as the Light board button.        

Yes those sized pins are a pain, that's the main reason I wanted the plug and socket pair with fly leads. I'd rather splice and heat shrink these, and nice flexible quality leads as well.