Oh... there is another brilliant way to deal with special promos (yes, I am brilliant

):
Most have some sort of TGP software, where you can customize the html, but they forget it can be used for more than just FHGs. In fact, you can also use it for general banners/links and schedule when and what to be shown. That way you can plan the special promos, and you do not have to think about it later - or forget it.
Be creative with your TPG software, and you do not need tons of plugins. Dynamic tags, keywords... it is all-in-one, cheaper and lighter... anything is possible, you just need to see it
