I know at one point early on in development of Crystal Skull, Sallah and Short Round were supposed to be at the wedding at the end (but it was eventually widdled down to just the cast of KotCS itself).
It'd be neat if Short Round did pop up in Dial of Destiny, but at this rate, given the resurgence in his career, I honestly wouldn't be shocked if he ends up getting a full-blown Short Round spinoff, either as a Disney+ series or a film (a film would be my preferred choice). Given Quan's age vs when we last saw Short Round in the 30s, it'd likely have to be set in the late 60s/early 70s like Dial of Destiny.