I second this notion. Lucid Dreaming is mostly a button you press on cooldown when you're AoE spamming. Now that AoEs are going to cost the same mp as the rest of our damage spells, the ability serves no purpose other than saving the day when fights go wrong, which, in that case, commit to how it's used in practice and make it a high impact, high cooldown ability. With Astrologian getting Astrodyne and a more steady supply of mp via Draw, I love the idea of Selene being repurposed into an mp pet and White Mage getting some changes to help its mp issues.
Come to think of it, it's honestly baffling how the job that's supposed to be beginner friendly is the one with the worst mp economy.