That anime has got lots of great ingredients, like decent animation, decent scenario, good VAs, nice art, some action and everything.
Yet it feels incredibly boring.
First there's some kind of dissonance where males are clearly in the wrong in anything. They are either the bad guys or losers.
That's not a first in anime where it's hard to have a good character with balanced characteristics, but maybe it goes a little far in an anime which primary goal isn't fanservice or some kind of otaku niche.

Like for Log Horizon, they'd need a stronger storyline. Something with real suspense, a little less predictable and maybe give a better sense of plausibility. Don't get me wrong, this is anime again, anything works when you enjoy it. But to me the pitch is set in an universe with science as a basis, even with better technologies than today, some things do not feel right. Like for a 11 (I think) girlie building something that size, with weapon systems and ammunition, all of that in her spare time without no one ever noticing...
And I'm not even mentioning all the sub-devices and their technical particularities that I do not think a single human being can build and assemble together in a single project in about 5 years.