It's not that i don't care about DPS at all, would be kind of messed up being a DD job. It's more that I don't care or see the need to nitpick my dmg% so sharply, as other players might prefer to do.

As long as it's something one could opt to not use, I would be fine with some of these adjustments to deploy.
I think a / command would be plenty for most pups, like how we have for us... I think it was /autotarget off? Or something? I've not used it since dynamis was a Ls event back in 09^^
Perhaps something like... /petautotarget on/off?

I don't think having it as an attachment would be a good idea though, we have limited attachment slots and elemental room, adding extra ones for auto-targetting would take space from other potentially enhancing attachments to better their performance. A job ability... Maybe. Low recast time would be best in that event, but that means you'd have to set it every time you logged in, where as a chat command would stick wouldn't it?