I don't think you'll ever get away from having to go back to the "manual" or whatever becomes the central repository of varieties. Unless the naming system contains a lot of free format to catch the particular nature of the uniqueness of the variety such as B over R in BRITT, first 6 over 8, top leaf missing etc etc, you'll never invent a system that immediately captures the nature of the variety. Even with Freeman number, there are so many 1874 variants that I always have to go back to the "manual" to check the die pairing.
Gouby's system is not very intuitive when it comes to dates with many variants but at least it is expandable and can cope with new obverses such as the 145 tooth Victoria, and virtually any date width. The important thing is to have a single source of varieties, their names and descriptions, with photographs, with single point maintenance (and maybe a small committee to agree new varieties). Chris P has mentioned producing a "new" Freeman with updated numbers but, if that involves changing existing F numbers, it would be fraught with danger.