The issue is, what if we don't want Yamatai's versions of technology, such as Aether beams, generators, Yamataium, etc?
Its quite simple, some of us don't enjoy Yamatai's technology because of the disgust of using such things. At least that is my point of view. I dislike the idea of armor that goes through an automatic regeneration after taking damage, weapons that instantly rip through every armor in the setting, and generators that never run dry (Unless Osaka's ship gets approved). Its a matter of being able to introduce a new technology into the setting that a player can take pride in using, due to knowing that it is not a weapon made from physics rape and plot device (plus some amount of fail).
I know this kind of babble seems old fashioned and silly, but there are some people who like to stray away from the pinnacle of technology, if that pinnacle is something that is so absurd that it makes a player feel guilty for using it (Much like end-game weapons in many games. Anyone who did not spam Knights Of The Round on FFVII would understand where I am coming from).
The recent tech submissions which have strayed away from Zesuaium, Aether, CDD, Etc. have been some of the best submissions as of late. Sure, there may be a dizzying amount of new technology, ships, weapons, etc, but there is a use for these things for some player groups (Lorath, Elysians, Nepleslians, Sourcians, Freespacers, maybe even pirates). Also, not every player is playing as a member of a government or major corporation and a large number of technologies which would give a merc or even every day salvager a hope against a SMX ship are illegal for their possession by law of the Yamatai Star Empire.