That's what I was afraid would happen, I think they introduced to much advanced tech to soon. The powers of this world couldn't possibly hold a candle to the, what could really threaten them at this point? I'm not entirely against the occasional curb stomp battle to show a characters growth if it's earned but with how things are now it looks like it'll be nothing but stomps for the foreseeable future.
I hope I'm wrong but it looks like it's going to devolve farther into standard isekai garbage. It's too bad, I like the basic premise a lot but the execution has been so-so.
Some of those ideas sound fun and would make for a pretty good read but I doubt they'll go with anything like that. How nice would it be to see the other factions start breaking out ancient archotech that they barely understand or having a small cluster of bugs show up before they're ready to fight them. There are a lot of ways this could work but I don't see them going for it.
Think this is the wall the original author ran into. This story was always ment to return to space to fight the alien bug threat Starship Trooper style. When they started that transition, they got a lot of pushback from the fantasy community just like we see here.
Yes technology fundamentally trumps medieval fantasy, especially when the advance civilization incorporates the fantasy aspects into their tech. But while the fantasy has until now been front and center, this is at core a sci-fi novel. So during the transition back into space, there is going to be a rather hefty curbstomp of the uppity fantasy kingdoms.
These last few arcs were never about regaining a lost technical ability. It was about recruiting a nation to rebuild the ships and crew needed to fight the threat to the planet. Yes Alan assumed it might take generations, but with this new advanced city, that timeline drastically sped up.