I've been checking the Pleiadians' 30 Years release a few times now. The Family of Light disc you should already know. Then there's the 1998 studio rehearsal tape where things get interesting. For convenience, the tracks are (including the DL-only first track):
Modulation
Merope
Alcyone
Asterope
Headspin & Taygeta
Rotating Fields
Electra
Lunar Civilization
Vimana
For some historical context (correct me if I'm wrong), there were no official Etnica releases between Plastic 12" (March 1997) and Equator (March 1999). Fluorophilia was briefly promoted but didn't happen. Meanwhile, there was Pleiadians' IFO in July 1997 and Headspin 12" in June 1998 so it makes sense that this was primarily a "Pleiadians year" with touring under that name. Also note that Family of Light was only released in October 1999, after Equator, so despite this release's bundling, FoL wasn't exactly a coming-very-soon thing in 1998 yet. Therefore the set it still largely about IFO.
So what do we have here? 4½ IFO tracks and the remaining ½ from a single that eventually ended up on FoL. Modulation "was conceived specifically to be played during the Total Eclipse Party in Venezuela which took place February 98", according to the FoL notes. Lunar Civilization and Vimana are "guest tracks" we already heard in the Etnica Live in Athens 1996 set, finishing that too but flipped. Then there's Rotating Fields, only semi-released on that shoddy 2001 Etnica mp3 compilation (and later elsewhere), but reportedly Maurizio's solo track from 1998. Were there any specific Pleiadians vs Etnica plans for that? I don't know.
And the music? Well, I'd say the versions are slightly toned down from the in-your-face power of IFO. For example Electra becomes quite eerie with so many things left out from it or altered. Also Lunar Civilization may be the "softest" of the many released versions out there, the loud main riff barely appearing. The whole thing kind of feels like the total mayhem era tracks were played in Equator style or something like that. But it's a different take and I like it that way.
Was this a review? Well, more like a background check and some first thoughts. But I'll be listening again while pondering the full context.