poison 1 and bio 1 get used once in your jobs life time. breath spells except for heat breath for proc neeeeever get used. all those spells that you listed can serve a purpose even though no one will utilize that purpose of boost chr (maybe with the newer jobs). breath spells had a purpose, but now are extremely resisted. would you ever use vapor spray? no... would you ever use bio 1? of course, though earlier on.

Hope you also know I am talking of Tourbillion and Barbed Crescent. They are broken.

oh and subbing those jobs you'll want to still use many of those spells you listed.