It's not crossing lines now, but it was just a general warning against power creep and better to mention the areas I feel could get affected most first. Like the wolf twin's can't summon existing Roman NP's anymore like the Arma Christi for example, because thats too hax. I would say stuff like summoning the internet and such would need Archmage powers, like Vincent hasn't even started to properly firebend yet
Their origin allowing them to instantly move to their twin and share thoughts and mana/abilities, I hope they aren't coming across as hax. It's the combination of Human, Servant and Ghost that all the 3 sets of gemini's such adaptability, but it makes them no way overpowered, and since at least one of them has to die, then I might as well use their best stuff.
And I am planning some actual Archmage shit abit later, with Claudia and the Gentleman.