Titles are exclusive - they very much cant be sold on the marketboard.
Same goes for most mounts, the exception being the ones from PotD and HoH, aswell as certain Eureka-ones. All other mounts have to be earned through achievments or actually clearing the content they're tied to - often some of the more (or most) difficult content, aka raids and Ex-primals (and while both get easier over time, you'd still get quite a while of "prestige" out of those mounts if you earn them at the time they're current).
Minions are a bit more accessible, true - but even there you have some that cant be traded and are locked behind achievments or similar things. I'm not really sure why they stopped doing that tbh.
In regards to rewards for crafters I dont quite agree with your propsals here - especially with "or just a way to earn gil". At least not until they add stuff that actually costs tones of gil. I've been crafting since ARR, I own a mansion, I gave several friends money to buy their houses and by now I've pretty much stopped to make money - I've got several hundred million gil lying around and nothing to spend them on. Why should I bother with a "way to earn gil" if theres nothing I can do with those gil afterwards? I know that some people have this goal to reach the maximum amount of gil possible, but thats something that seems utterly use- and meaningless to me and doesnt feel like a reward for anything.
Gear and tools... well, those to me are only means to an end tbh - getting a better tool would only mean that crafting gets easier so I could craft more so I could earn more useless gil... doesnt seem great to me...
Mounts, minions and titles - or other form of "glamour"-items (maybe some exclusive glamour-gear instead of stuff that actually has stats?) - seem way more rewarding to me than just something that would make crafting easier or add more money, that has no use, to my pocket.