Spot on! The H5 factory library is the old H4 + the individual instruments. If I remember correctly, some of the H4 content is actually labeled Halion Sonic? To the extend that I’ve actually cared, I’ve found the library naming slightly confusing. I bought some drum samples in Halion format and when imported into H5, this library shows up as a Halion 3 library.
About the trial presets, I can’t help right now.