I work in Archviz and we use ue4 for VR and animation. We can not use the images because there is no perspective control. Perspective control is a procedure for composing or editing photographs to better conform with the commonly accepted distortions in constructed perspective. Perspective control - Wikipedia
Without it it is impossible for a good render image. This is because architectural renders need to fix the wide perspective. After we have made the image the image will be photoshoped. Wat we don’t want for workflow purposes is to fix the perspective distortion.
I think UE4 will be used way more when we have a button for correcting the perspective distortion when you use a wide angle. Also the images will be more beautiful.