I googled Harem Protoganist and... yea I see what you mean. There's supposed to be more going on but by exclusively following Aiden this whole time we've mainly only seen what he's been up to, and only glimpses at that.
By now it is apparent the story is sequentially alternating following Rowana, Aiden, and Kate, one of the indirect meanings of "Tertiary Positioning". But it's not the only meaning.
It wasn't clear in Talmid Show S3 E4 that Macabross was in another dimension, just somewhere distant, that the crew accessed by flying through a black hole. That black hole can now be understood to be another Unverse Jumpgate, Interuniversal Projector, star gate, or whatever thedude calls his stationary unverse drives, disguised as a black hole. This is 3031 AF, seven years before 3038 AF when Talmid Show S3 E4 happened and thedude is certainly in control of Macabross, and The Invasion of the Star Trek Dimension suggests he had it in 3037 AF too, so it's not yet written when he gets control of it from Teenyweeny. Maybe we will see in this story...
People never seem to stay dead in my stories, whether by "rebuilding" themselves or having their memories live on in other people's heads or going to some purgatory dimension under the hope of being brought back.