Without becoming too 'spotterish', how many UK GA pilots know what each type is...
Skylane, Skyhawk, Stationair, Cardinal, Skywagon, Skynight, Skylark, Skycatcher...
Archer, Warrior, Cherokee, Cadet, Dakota, Pacer, Tri Pacer, Vagabond, Carribean...
Whilst I see some merit in the system (and CAP413, Table 10 on page 14 does mention this) I can see a few pilots going 'Now, just WTF type is ahead of me'.
Yes, your SA may be improved, but there is no replacement for the good old MK.1 eyeball.