I have a suggestion for a feature in a future release.
To fully explain this, I have to explain my situation first.
My forum has 2 styles that a user can choose from; The default one, and a lighter one.
Now, no matter what I do, google ads are going to stick out on one of the styles.
(If I use a dark template for the google ads, they will stick out on the lighter template, and vice versa).
I suggest that you add an option to enter a set of banners/ads codes for each template.
That way, the user will be able to have a set of ads that blends into every template, instead of blending into one perfectly, and sticking out like a sore thumb on another.
A very simple way of doing this would be to have an option in the Admin CP to set the number of styles on the forum. Then, based on the number entered, display that number of "adsnese codes" boxes (Typo in v5.2

- it should be spelt "Adsense")
(These are the boxes that contain the adsense codes that appear on the forum)
Then, underneath each set of boxes, display another field that a user can type the styleid of each style they want.
For example;
A user sets the option to have 3 styles.
3 different sets of adsense code boxes are displayed, with an option underneath that a user types the StyleID of the skin/style that set of google adsense ads are placed on.
You could check which styleID is being used the same way that you check the current user's usergroup ID to decide if ads are shown or not.
Thanks for Considering this,
nNJ
P.S. I sent this same message to you in a PM. I think that it is a relatively simple feature to add, considering the increased level of user custimaztion it will bring