A good middle ground would be a feature like in Call of Duty, where you can select multiple game modes and it will randomly put you in one of the selected games modes.
So that you can tick / untick a game mode. If you select both modes you will end up in a game twice as fast. Or you just untick normal Quick Play and only select Smash if you only want Smash.
This mechanic was introduced with Call Of Duty MW2019 and was really genius. It is in every newer CoD game ever since.