1.) I don't think it would cancel out other Adhara/Mordecai abilities. ^^
2.) Adhara can! But Mordecaism generally occurs alone.
3.) I'm definitely open to ideas! 8D I don't see why the ability can't evolve and grow and have other potential variations. ^^ Adharaism is a rare evolution of Mordecaism, after all!
4.) It does indeed!
5.) That depends on the person. In some people, it shows up right away, in other people it develops later in life.
6.) Yes! I saw in one thread a long time ago, some players were doing a thread where their character was being tested for the ability, and was made to hold some saint's holy relic, and that tested her somehow and confirmed her ability. I really like that idea! 8D So I'm gonna say that they have ways to test for the ability--maybe special holy relics from their saints. Maybe, for example, they test for Adharaism my making potentials hold the original Adhara's sword (which I'm sure the church has kept!). Different artifacts may have different reactions--maybe the sword, for example, glows, and maybe other artifacts tingle, etc.
7.) They do have ranks! Similar to Mordecai, with the highest ranked being a Commander.
8.) Similar to the Mordecai! The lily on their tabbard would probably just be white instead of silver. 8D
9.) Conscripted, definitely. They could hide! And probably keep it a secret pretty easily if they were careful...until Mordecai came into town to test people. |: But Connlaoth is deeefinitely interested in anyone who has that ability being useful to them, so they would definitely wanna get their hands on anyone with that gift.