1. images to path field? why not add a simple button to the media gallery ? this would be a start to improving this module
2.module customization? Lacking of editing style sheet unless you want to metal with the module it self (code) which i doubt.
There are limitless upgrades that any module can use i have seen other picture galleries with tons of options but hey there all commercial so maybe that's why....
anyhow the module works great for what it is..