Great job! Thank you. I do have collected thousands of IES light files and, if I can make a suggestion, I would say that getting the IES files is not an issue, even previewing them, but the great missing thing is that in reality (or, this is my workflow) you should start from the lamp holder, depending on its usage and destination. Then you can get the proper IES file.
For this reason I have first to choose the right lamp holder from the manufacturer’s catalog, then get the IES file for that specific lamp.
The problem is that those fixture images are proprietary and I don’t know if they might be “read” and reused somewhere else. Therefore, an alternative solution would be to at least use categories and sub-categories to define the practical application of the lamp and its placement (interior, exterior, comm. buildings, floor, wall, hanging, etc. these are only examples).
Anyway, sorry for the long post and thank you again for what you’ve done.