Since when we "already have this"? This ought to be a joke
There are 47 standard user fields in SFDC and only 5 lead owner fields and 3 account owner fields in Marketo. I am not saying that all
47 fields would make sense in Marketo, but there are quite a few that we could make use of.
We cannot even get the account owner phone to use as a signature token in an email. I would also use the profile, the role, the company name, the account owner title, the department, the time zone, the language, the division, ...