I wouldn't say "careless". I'm certain the developers only added elements that they already had into the fusion chain.
You still suggested sulfur and the like, which are new elements and don't mesh well with the game.
Sodium hydroxide is more or less Caustic Gas which is an acidic gas.
Okay im planning to make this a mod but im only compiling for windows(people on other platforms have to compile using my src and sorry for mobile) since I no longer have access to github account.I'll add sulphur,argon,chromium and calsium.Just do molten titanium,and helium is just noble gas.
Dont expect too much of me cuz it can fail.