When an end user want to install firmware for the wireless cards, they
need to know which chip is build into their computer, to get the
correct Debian package name.

If Debian would provide a meta package for all wireless/wlan firmware
packages, the end user only need to install this package.

We already have firmware-linux-nonfree and firmware-misc-nonfree
(which do not depend on the wireless firmware packages)
so maybe the new name could be firmware-wireless-nonfree.

I found these package that include firmware for wireless cards.

atmel-firmware
firmware-atheros
firmware-brcm80211
firmware-ipw2x00
firmware-iwlwifi
firmware-libertas
firmware-ralink
firmware-zd1211
firmware-brcm80211
firmware-ti-connectivity

I'm not the maintainer, and although a metapackage is a good idea, there seems
to already be a package for this purpose: isenkram, which finds the packages
that may be necessary for hardware to work. I haven't tried it, but perhaps it
needs to be made more prominently known? It seems it's graphical.

The debian installer detects hardware that needs nonfree firmware and
shows the user which package name to install.

On the nonfree version of the Debian live CD the calamares installer
already installs all nonfree firmware packages. Now sure were it gets
the list from.