lol, i dig this. I'd say you'll have to work harder than that to stretch the conventions of what is a sandwich. We've had some pretty bazaar entries over SSC lifespan.
For example @nomadics made a star destroyer pizza sandwich and @progressivechef made one entirely out of fruits with roasted pineapple as the "bread." @steemit-foodie has also produced some interesting entries that have pushed the boundaries. Oh man.. we've had pancake and waffle sandwiches etc soooo much.
Don't give up! I strongly believe there are still many a frontiers left to conquer in SSC.
classic and game on. would be a good theme to work with.