Hmm let me contribute my thoughts here
Just to clarify: Yes you can just put something in your bank account from everey of you 8(!!!) characters and withdraw it with every of those 8.
Now as awesome as that is that you will recieve the messages from every char on every account.
Here comes the trick: Ever thought about investing one point into the Hireling passive? ON EACH CHAR?
LOL I just hope zenimax does not punish those exploiting this mechanics
Now concerning skillpoint investment to craftig skills: I will just focus on two ways and I am still confident that there will be enough skill points to make my favourite build