It would be helpful to designate a specific folder as thd DEFAULT for photos. (i.e., "GALLERY") as it would simplify attaching an image to the text message. This could be by default designation choice, or by the being able to sort folders in order of user-preference.
IDEA #2 - Provide access to audio files to allow attachment of sound files like ringtones, etc, stored on the local device.
IDEA #3 - ALLOW MMS by default for long messages. Not working since most recent update.