Mr. Savnar, I appreciate your inquiry and will answer the questions as thoroughly as I am able.
From previous excavations, including the initial one in late YC119, we had hoped to recover partially intact data matrices and storage systems, perhaps even old forcefield technologies, power systeme, and cultural relics.
The architectural styling of the original and other ruins, including the unfortunately now collapsed one in the current extraction, generally, are congruous with that of the Yan Jung, and considering how widespread the ruins are, but how limited in scope most seem to be, I’d infer, but not stake any specific amount of isk on, the moon having been the site some sort of storage, resource processing, or observatory setup, or a combination thereof.
Which begs the question of why, and if other ruins are scattered across the system on other moons or planets. Unfortunately due to limits of time and resources, a commitment has not been made to sweep the whole system for more ruins, though I do keep an ear open for any reports of strange things of course.
As for why we chose such aggressive extraction methods as our mainline, as I’ve answered before… due to the nature of lowsec resource claims, particularly over moons, and the location of many of the ruins on the moon Umai being almost exclusively connected to areas rich in specific ores like Otavite, Sylvite, and Titanite, frankly it was only a matter of time before a less inquisitive group would come through and callously reduce the various ruins to rubble in pursuit of resources.
It has transpired that, largely, only the capsuleer cadre of UNF has shown any real extended interest in Eugales as far as capsuleers go, in terms of long term usage of local resources so the initial projection of potential outcome was wrong, but the policy of extracting ruins alongside resource deposits where possible remains.