Thanks for your kind words and support ZeroStatic!
Glad to hear you find Librarium assets useful!
Let me answer your questions!
The reason why the 2017 compilation pack is priced lower and begins with July 2017 is because that was the start date of the current reward set format (Before July 2017 reward sets were very different in terms on content, and they kept gradually evolving to the content we have nowadays!) They are also not currently available anywhere as they would have very few content in comparison to the current content standards, but your comment gives me the idea of creating a Reward set legacy pack, packaging everything from Librarium's first year and early 2017 so that those are accessible again!
I am also in the process of cleaning up those uploads so that they are more navigational, I have just been through a lot of draining events lately which have prevented me from tackling that smoothly, but it will definitely happen!
Thanks for your interest and reaching out, let me know if you have any more questions!
Thanks to your support Librarium keeps evolving to offer more and more!