Customizations are not exclusive
Please note that any paid feature or customization request may end up in the public release eventually, if the developer found it appealing. The price for custom work greatly expedites development of the needed feature to be included in your version, but does not grant you exclusive use of your idea or request. Your custom request may get included in Justified Image Grid without any further notice at any time, unless you requested to be notified.
What kind of ideas are beneficial?
Feel free to ask for something that has already been requested, this strengthens the need for said feature!
Popular requests include more sources, lightboxes, extra visual settings for the horizontal justified layout, UI improvements, 3rd party plugin compatibility, better filtering, pagination, horizontal scrolling, social features, responsive improvements, performance / bug reports etc.
However, certain areas are currently out of scope of development and are not worth requesting. Among these are: use of any lightbox outside JIG, Pinterest layout (vertical/columns), rearrange animation for filtering, TimThumb alternatives, NextGEN specific eCommerce or lightbox features, non-WordPress version.
Warranty void if changed - customizations affect your ability to update
It's worth considering that beta software is not meant to be used in production and is provided as-is without any warranties. Beta testing is about working out the best way for a feature to work, and the road that leads up to completion is treacherous. While beta versions can and should, custom versions shouldn't be updated, or the changes may get lost. You can always re-request the files for your customization for free, should they get lost. Also, you may request re-customization for an additional fee if you wish to update to the latest version.
Some of the treasured Justified Image Grid beta testers
Carlo Bezoari, Kevin Lewis, Alexander S. Kunz, Gopal Metro, Ricardo Torres, Nathan Wells, Gert Vardja, Jérôme Jeanne, Nicols Dennis, Gautama Swamy, Titusz Fabian (QA)