I'm not normally into cosmetic DLCs, but I've *really* enjoyed Humanoids.

There are a few reasons for this:

1) The DLC's humanoid ship set has easily the best looking ships and starbases in the game.

2) The voices the DLC provides are underrated and were an unexpectedly enjoyable addition to the game. Since Stellaris already has a great soundtrack, I'm less likely to mute the game and more likely to enjoy the DLC's voices.

3) A large number of prescripted empires use the humanoid ship set and voices. This DLC meshes well with those, which spawn as AI empires even if you don't play as them.

Obviously this isn't as beneficial as DLC that affect Stellaris's mechanics, but I have no regrets about having picked it up on sale.

This was the most fun Stellaris DLC that Paradox has released in years. It's the most significant update to the endgame since Utopia, if not since the game's release.

It still needs some balancing work - espionage is a little underwhelming, and I haven't seen an AI empire become the crisis yet. The content also gets old more quickly than that of some other expansions - there's only so many times you can become galactic emperor or destroy the galaxy before it becomes passé.

Nemesis is worth buying on sale, and I'd rank it after only Utopia and Federations in terms of quality.

If you like Cities: Skylines or have most of the other DLC, this is a good one to pick up on sale.

It goes on sale too frequently to justify paying full price. It adds plenty of new content, but few game-changing mechanical systems.

This is a good DLC but, counterintuitively, its most enjoyable features are for Japan, not China. The Chinese content is good, albeit tedious, as other reviewers have said. As long as you expect the DLC to make China a deeper experience, but only a modestly more fun one, you won't be disappointed.

Obligatory disclaimer to only buy older Paradox DLC on sale.