Settings-Level Variables (Liondesk Codes) for Campaigns

Right now, the only real place we have to customize the campaign emails we send other than text is the emailsignature field.

I'd like to see one MAIN variable added right away, and 2 others added as well.

First one (high-priority): {{brokeragename}}  Many of my emails contain my brokerage name.  As we just went through a name change and rebranding, I have to search and replace each instance by hand.  Would be MUCH easier if this were a variable / Liondesk code.

Second two variables would be {{emailheader}} and {{emailfooter}}.  Would allow for some HTML branding to make emails look a bit more polished, but allow for universal changes to that section that would apply to all emails where it was used.