I did not expect bacon to be very good on a pastry, but I have tried it on donuts and cupcakes and it can be better in practice than it sounds on paper. It must be American style bacon, crisp, and it must be well drained (no grease allowed!). That being said, bacon is not high on my list of priorities for this recipe.
I might have a better idea. Birdy, cover your ears. If this works it would be the absolute death of any diet.
What happens if I make a batch of fresh home-made pralines, smash them, and use them as a filling rolled into the cinnamon rolls?
FYI: Real pralines are halfway between a cookie and a peanut brittle, but made with pecans instead of peanuts. If they are as hard as peanut brittle you have overcooked them. They have a roasted pecan flavor with a caramelized sugar coating. They are sinfully good when they are still warm, and really not very good in the numerous praline shops in the NOLA French Quarter.
Maybe praline filling with a maple or honey glaze?
For that matter, it might be good with a Nutella-coconut filling and a cream cheese glaze.
Further experimentation is called for.