Pop over based on cookie and number of times?

Hi, would you consider adding functionality to this plugin?
I'm in need of a popup that can be displayed x amount of times for each visitor across all blogs.

i.e.
I can set a cookie name, say "mycampaign_1"
I can set a number, say "1"

This would mean that for every visitor this popup would be shown just 1 time, but 1 time for each blog the visitor visists.
If/when I want to run a new campaign I just change the cookie name and the content of the popup

Possible, doable?

Thanks