For me, it's that there's threads that are 6-7 years old that aren't resolved, and with no development since that time....
For example (and not specifically guardians...):
- Sensor and Probe pointing to Merope/Merope 5c respectively. There's vague suggestion that it was to highlight where we need to look (Pleiades),, but specifically to Merope 5c? That's a bit odd... that and Merope features in the Thargoid link triangulation pattern.
- Col 70 Sector FY-N c21-3... what's special about that? Why does the Probe include distance in LY to that in it's data stream, and why does the Link include it in the spectrogram and triangulate off that.
- Why've we got a whole bunch of permit lock sectors around Barnard's Loop, especially when it used to be open?
- Why do Thargoids have a unique reaction to Meta Alloys?
- Why do they scoop humanoid cargo (we're starting to get closer to that one, thankfully)
- What's the logograms on Barnacles/Inties mean?
... just to name a couple things... there's tonnes more. But instead of closure around them, we're now getting new things like Barnacle Matrix Sites and such, introducing more unknowns to the mix. Even HIP22460 was just a silent, permit-locked system for years before we reached this point.
It's just, frankly, a bit daft to sow all these things and have them sit idle for so long, only to introduce new things with a lifespan of seconds.
As I've said a few times now... so far the only difference with this new battleground site is that Thargoids are present, and it's far away... Why couldn't a hyperdiction have occurred around the existing battleground which, for all intents so far, is identical.
EDIT: I mean, I'm still hanging around to see where this all goes though... but it's a slog...