@JLee a suggestion for you.
Do a PRD version of the Stephen Chow classic film God Of Cookery’s “Sorrowful Rice” 黯然銷魂飯 (it’s more like sorrowful/ecstasy, hard to put it).
It’s basically char siu rice with a fried sunny egg. You can do crazy variants with it like premium rice, free range organic / jidori egg. Find a killer soy sauce to dress over the top and offer it as a variation to your char siu rice plate/box. You can even drizzle some lard further over the whole thing for more aromas… (lots of ideas if you just put in 黯然銷魂飯 on youtube). A pork neck version would be even more decadent, or pork neck/char siu combo. Could even make it a limited offering, and this will be a huge hit guaranteed from all the layers/nuance/explosive profiles, if this doesn’t add further burden to the operations.