Is it weird to consider making a tertiary team at this point? Fire grid primary team is doing really well, and so is Thunder secondary team. I'm asking mostly because I dumped for the guaranteed SSR and got lucky with Susanoo, which gives me her and Satan as dark Kamihime.
Basically, with Osiris coming out not too long from now, am I spreading my resources too thin by working on a 3rd team?

(Sidenote: Had no idea Susanoo's weapon was thunder and not dark, do any other characters have a weapon that's a different weapon than what they are?)