Picons by 'Service name'.

Picons by 'Service name'.

Benefits:

Picon names are human readable.
If the service ref changes, the picon continues to work without intervention.
Picons can be shared between satellites, terrestrial and cable.
No symlinks are necessary for picon sharing. That means picons that previously needed symlinks can now work from a FAT32 formatted USB stick.
Service-ref picons take priority, so where a unique picon is needed, for example where regional channels all use the same service name, they are still available.

Filename format is as follows:

Lower case, bbconehd.png (this allows BBC One HD and BBC ONE HD to share a picon (Das Earst, 19.2E; DAS ERSTE, 13.0E; etc))
No spaces,
Excluded characters: ['/', '\\', '\'', '"', '`', '?', ' ', '(', ')', ':', '<', '>', '|', '.', '\n']
Special characters: '*', '+' and '&' are converted to 'star', 'plus' and 'and' respectively.

Enjoy!