I take it as compliment, regarding the 'overdone' defense. We wanted to make sure to obliterate the attacking force as Kinkaku-ji is important to our Sisterhood. The only downside to this is as you already established: The destruction of salvagable materials. But at the time of the conflict, we only had the safety of our station on our mind.
It is however good news that not everything is lost. The technology that you retrieved is very valuable to us and we have already processed some of what you brought in. As you already mentioned, some of it is in good condition, other parts are only barely operational. However, we can learn alot from studying the materials you are bringing in, regardless of how damaged it is.
That the heavier capital ships are beyond saving is disapointing. As stated earlier, it would have been interesting to have a KNF capital ship under GC command. Regarding the hull sections. We are no experts in metallurgy so we would have to divert to your expertise. We also have no smelter on Kinkaku-ji.