It would be good for apps to automatically utilise the SD cards when detected. Camera now offers to use SD card for images, Spotify can use sd cards in settings but it's fiddly to find. But most apps insist on using internal memory. Moving apps to sd card works for a while, but when apps update they reset to internal memory again.
It would be good if file manager automatically moved certain files to SD card, especially downloaded images. Music downloads too. It should be noted that my default downloads setting targets sd card, but most downloads go to internal regardless, hence feature requests.
All apps should detect the sd card and offer to use it instead of internal memory.