Why do you want/need this mod? Does it actually make the campaign better? As I understand it, FAF already redesigned the campaign missions to tweak the difficulty level.
And why would it even matter if there is a mod that makes the campaign more interesting? The campaign is only intended as a stepping-stool to playing with people. It's not supposed to be fun or interesting.
You should eventually come to hate the campaign and find it boring, then you can play with people. If you don't want to play against people, play a custom game against AIs, like 4 humans vs. 4 AIs.