Since the package offers support for many Broadcom cards, it would be nice to support the savedconfig flag and install only the needed files, as it is done in sys-kernel/linux-firmware.
On-disk installed size is 4 MiB, FWIW.
I don't see any advantages on using savedconfig on such small size. I've added compressed firmware support, and now installed package even smaller: # equery s sys-firmware/broadcom-bt-firmware * sys-firmware/broadcom-bt-firmware-12.0.1.1105_p4-r1 Total files : 123 Total size : 2.69 MiB