The limit is where we draw it. Since "we" consists of a huge tenet of different people with different philosophies with different opinions, there's no clear answer. If a group of people are roleplaying a martial arts tournament and someone wants to homage Ryu and kick someone with the Hurricane Kick, that's par for the course and not entirely impossible given how flexible the lore can be. If that person then walks into the middle of the Quicksand and attempts to do that, stirring up trouble...
Well, that'd go over as well as we all think it would.
There's nothing wrong with clever use of the loose lore. Everyone's going to have differing opinions on how things work if they aren't explained; Hell, that's the basis for real-world science and physics isn't it? The difference is we can't experiment to find out, so we're stuck arguing in circles about what can or can't be done.
I'm definitely going to tackle your clone-memory thing though, in a relatively-reasonable way.
Voidsent return to the void with their memories intact. Voidsent can possess people. Possessed people should in theory lend their knowledge and memories to the voidsent possessing someone. Fantasia can be used (maybe, depends on who you ask) to render someone's appearance differently.
I present to you the story of a voidsent who possessed someone, let's say someone like Otto Vann. Otto's world is made up of drugs, women, and finery. That sure as hell beats the Void! Demon Otto uses his considerable wealth to hire a body double and acquires enough Fantasia to make the transformation utterly complete. Then Demon Otto suddenly dies in a Syndicate plot to usurp his power.
Voidsent returns to the nether. Eventually he claws his way back into the real world. Otto's double has been living Otto's life, since the real deal was dead, and went along with the charade. Demon then possesses new Otto and reclaims his vessel, sort of.
How's that?
Well, that'd go over as well as we all think it would.
There's nothing wrong with clever use of the loose lore. Everyone's going to have differing opinions on how things work if they aren't explained; Hell, that's the basis for real-world science and physics isn't it? The difference is we can't experiment to find out, so we're stuck arguing in circles about what can or can't be done.
I'm definitely going to tackle your clone-memory thing though, in a relatively-reasonable way.
Voidsent return to the void with their memories intact. Voidsent can possess people. Possessed people should in theory lend their knowledge and memories to the voidsent possessing someone. Fantasia can be used (maybe, depends on who you ask) to render someone's appearance differently.
I present to you the story of a voidsent who possessed someone, let's say someone like Otto Vann. Otto's world is made up of drugs, women, and finery. That sure as hell beats the Void! Demon Otto uses his considerable wealth to hire a body double and acquires enough Fantasia to make the transformation utterly complete. Then Demon Otto suddenly dies in a Syndicate plot to usurp his power.
Voidsent returns to the nether. Eventually he claws his way back into the real world. Otto's double has been living Otto's life, since the real deal was dead, and went along with the charade. Demon then possesses new Otto and reclaims his vessel, sort of.
How's that?