The finale to GATE: Thus the JSDF Fought There was better than I expected.
It was still a muddled mess of dangling plot threads and pairing the spares with very little justification. One pairing basically gave the audience the middle finger with respect to one of the dangling plot threads I mentioned in my third thoughts.
The finale did include a nice call back to the first episode that neatly bookends the series, and that was fairly amusing to see. The last two episodes were, if you ignored everything that GATE was itself ignoring, quite a lot of fun.
Other than that, I accurately called it at episode 19: a muddled mess of half-arsed scripting. Fun to watch in places, in need of trigger warnings in others, and generally a mess overall.