Any question answered...

on my new XT groupset there was the option for the indicator windows, i took them off.

really not sure what the point is, if you have sensation in your legs (and possibly a cadence sensor) you really ought to be able to deduce if your gearing is inappropriate

so a little indicator for what gear you are in seems a little pointless

Plus you have saved precious grams

Thanks dammit etc, would never have guessed