If this is a temporary retheme, giving FNAF, F13 or even WWE a dedicated store would make sense… especially FNAF, given how insane the merch sales will probably be.
If it’s not related to HHN, I guess this could be a full-time Mummy/Monsters store? I’d want it to be a Mummy store in name only that sells all Monsters merch. I do feel like all the lower lot attractions are covered on stores already with Transformers and Mummy sharing a store, so I genuinely have no idea what this could be.