See title: The planet seems overpowered for two reasons.

First: Biters are spawning here. While a biter spawner can't be placed down, I can still use capture bot rockets. Because nekohaven is half-gleba, I can then use gleba's bioflux and give it directly to the biters, no space platform logistics needed.

Second: Lubricant cracking. I think this would be fine if it was locked to Nekohaven, but it's available for use on other planets, notably Tchekor and Fulgora. Because both of these planets have infinite oil oceans, Lubricant Cracking is pretty much equivalent to "ice becomes crude oil".

Tapatrion and Zzhora have this issue too. So does ithurice, though not as badly.

Tapatrion's recipe is not planet locked. Therefore, there's nothing stopping me from - actually, that recipe isn't very useful without fluorine. I guess it does let me make fusion cells off of Aquilo, so the only thing I need to export is lithium plate.

However, Tapatrion also has the issue of immediately unlocking coal synthesis. On Gleba, this requires actually GOING to gleba and setting up science production. (Since it spoils, it also involves setting up the logistics for transporting science packs between planets.)

Zzhora's recipe is 1 spoilage, 4 nutrients, and 20 water for a calcite... and is permitted on Gleba and Nekohaven. There's nothing stopping me from using this recipe to perform iron and copper casting on these planets, and it's available significantly earlier since I don't have to set up automatic rocket launches on Vulcanus or space platform logistics; I just research Zzhora and it's done.

Ithurice's problem is immediately unlocking a steam turbine, without needing to land on the planet. For Gleba and Nauvis, if you want a steam turbine, you need to physically land on the planet and solve the problem of leaving the planet (or just conquering it). For Ithurice, if you go to Vulcanus (or start on Vulcanus), when you acquire space science and research Ithurice you immediately unlock 3x power production without needing to do the work of landing on another planet and researching uranium processing or heating towers.