Sulfur Cubes could be fed Monster Spawners

It'd be very cool if you could feed Monster Spawners to Sulfur Cubes! This would only be possible with commands or in creative mode, but it could also be used for custom maps!

If you give a sulfur cube a monster spawner, you could then give it a spawn egg to insert into the spawner. Afterwards, the sulfur cube would start spawning the matching mob around it, and the spawn rules could be similar to a normal spawner block's.

I imagine making it ride monsters, effectively giving you things like "spawner zombies" you need to take out in stuff like PvE battle minigames or adventure maps, or it could just be used as a little pest you need to disarm using shears.