I think your idea sounds very reasonable. As with many things on Atys, I would say just start using it. If people copy you -- it's "approved".
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Remembering Tyneetryk
Phaedreas Tears - 15 years old and first(*) of true neutral guilds in Atys.
(*) This statement is contested, but we are certainly the longest lasting.
<clowns | me & you | jokers>