For real, not a whole lot makes sense in that department, kinda reminds me of the meme with the dog on the computer while the whole is on fire around it. One one end, you'd think they took some minor criticism in the past, for say these universal actions that "make a tank/dps/healer" but then, they dont do it for actions across the board like you said. I have no idea what they're thinking half the time, especially when they have establish lore and abilities for jobs, and implement something entirely alien to the franchise wearing the skin of something established