This mod is genuinely a great addition to the early and mid-game's complexity without completely overhauling the whole game. The models and icons are well done and it can be easily configured to fit perfectly into ones own game without feeling overbearing. This 100% deserves more downloads. One thing I would like to add is to have the fluid prototypes be compatible with those of other mods, such as "cerys" methane gas and this mod's methane gas.

Absolutely stellar work though I am having a lot of fun with this one already

Thank you very much for your kind words. It makes me very happy to see that my intentions are coming across.

More mod compatibility like the various planet mods is on the To-Do list but I have to admit that I have not yet played any of them. I'm very much looking forward to playing a lot of the planet mods (cerys in particular) and hence I don't want to spoiler myself by looking at the config files beforehand.

That is a fair point. cerys is definitely worth the playthrough. I have an idea for a recipe if you are interested too. the Fischer-tropsch process might fit well here. It essentially allows conversion of coal-bearing materials and gasses into longer hydrocarbons using syngas. a recipe like that could convert methane and syngas into petroleum gas, at the cost of a longer crafting time than usual fuel cracking. Could help with the potential of methane stalling natural gas refineries when petroleum gas demands outpace syngas. Something like 60x methane + 20 syngas = 20 petroleum

Thanks for the input, I've added the recipe pretty much like you suggested. You can enable it via mod settings and it is also fully customizable with FC.
Usually petroleum gas should not outpace syngas when scaling up science. That is actually one of the reasons I changed the "cracking order" from heavy-oil → light-oil → petroleum-gas ← methane-gas to heavy-oil → light-oil → petroleum-gas → methane-gas in 0.2.0. However, I can imagine that changes depending on the mod constellation.

I've quickly verified that cerys uses "methane" like scrap chemistry does, so technically there was some form compatibility with cerys if you also had scrap chemistry enabled. Thus I've added an option to enable normal methane without scrap chemistry called "force methane compatibility" (requires FC). With that option, BC's recipe will use normal methane but you need to have another mod (like cerys and scrap chemistry) enabled that provides the fluid definition for it.