Yeah i don't really get it either. Hraesvelgr alone is better than all the accounts you've linked. After checking your id i see you also have Hastur, so it's better than anything you could get with rerolling.
On top of that, Wind is a very versatile element. I don't think trading it for a water account is a wise idea.

If you just want a secondary account then 15 or 50 are probably your best bet. But it's not even close to what you already have.