Is it worth having him though, if I don't have a dark team to build around? A lot of the current characters that interest me (Catalina, Rosetta, etc.) aren't dark-type, so I'm not sure. Vira looks nice, as does Lady Grey though...
Try this, it's what I used:
https://granblue-wiki.com/index.php?title=Rerolling
Giving out accounts is difficult, since it's recommended you use the salted email method and by doing so they're all essentially tied to that singular email address (and, in my case, same password). If you could unlink an account from an email and re-link it to another, then yes, giving one away would be easy. But you can't, so unless people are creating separate/different emails for each account, giving one away just isn't safe.
Edit: BTW, in-regard to the Starter Dash ticket. Can they still be used for limited-time characters, such as Catalina and Rosetta, after they leave the current gatcha? I'm just curious as to whether I need to purchase it before new characters are swapped in, or if I can take my time.