Nothing Mapped To B Key Cl.377/387

i’ve noticed nothing has been mapped to the B key whereas usually it has either the signal bell (375) or depot whistle (395) attached. is there any chance in a future update one of the two can be mapped to the keys

 

I wanted to say this too! I hope it gets added

 

It would be nice to have the depot whistle on the B key as currently there's no way of sounding it in an external view.