I'm with Dirk on this one. The ravioli would just be eaten separately (out of the can of course). The slice of cheese would actually make things worse. Taste would improve by a point, but it would act as a barrier, keeping any of the sauce from reaching the bun. Thus.....making it sloppier to eat. You'd spill or wear a good portion of the sauce. Besides, the only thing that goes on a hotdog is mustard (and tobasco if you're up for it).
In my book, if it gets difficult to eat, it's off the menu.
Beside the rotten taste, why do you think I won't eat those fukin sea spiders that people call crabs? Too much work, for too little reward. Plus, they taste like $hit.