It would be really nice to have an online sylestian bank where you could deposit gold to save it. Many times Ive wanted to have something like this. Like recently, I am going to do a secret Santa and was trying to save my gold but I kept spending it! If you have anything to say against or along it, please post below!

I know there used to be a Sylestia Bank guild thing called The Sylesti Treasury, but I think it closed? Not sure.
I agree that a site-made banking system would be great, although interest rates (if there were to be any) would have to be highly regulated.
Why? Look at Neopets. A lot of how their economy went off the rails had to do with the massive interest rates there were once you got a high enough number. (Let their sacrifice be a lesson to us all lol)

Or maybe like a bank with investments, and the investments will help you raise money faster. It could maybe work similar to real life? I like the idea. :)

YES _{because i am not a responsible person} :3