Unique export size for Output Maps

Hey,
the title say it all. I really miss the feature, that i can export outmaps on a unqiue size. As example, when i export a _ORM (Occluion, Roughness, Metallic) Map i don't need it in 4k. I maxium need it in 1k or 512. But i have always have size them down manually afterwards.

Would be great to have a feature for this.

Greets Spaehling