Thanks to the moogle almanach, we can check the weather, thanks to hunt registries wie also know how elusive certain NMs are, and we also know if somewhere is danger "buy feeling dread".

How about adding to the moogle almanach the option to see, also if not clearly understandable, if the needed NM for the trial is up, will spawn soon, or wont spawn anytime soon. At least for non Abyssea NMs. When starting a trial and being unlucky, one might come to an area right after someone killed the desired NM, so no idea how long the wait might be.
Not giving that out for free though, with a Quest. I love moogles in quests.

Maybe, I think like in ffix, a field moogle that comes to you when you blow a whistle that gives you limited options. Like getting things from the MH, or just send or receive something. With a long quest chain, and with the chance the moogle not coming to certain areas (with no charges on the moogle whistle) but sending you a whisper he wont come out there, maybe with some moogle important issues.

The Moogle can go back to check and feed my plants. Give him the ability to look into my storage and give me things. If he can go back for flowers, he can go back to get my eradico mitts from storrage

More final fantasy like mounts. every ff had more than just chocobos as mounts, even if just with very limited use, but fun nevertheless (I understand that we cant get our own airships though)

More Chocobo Breeding options, I wanna have a gold Chocobo that is able to run much faster than normal chocobos (not allowed in Racing stables). Maybe give us also the option to run with the chocobo over water for for small lakes

just as chocobo breeding side note, I want to sew the stable keepers or be able to have my chocobo with his own stable in my mh, why? The chocobo runs away, and the npc says "Someone was supposed to take care of him...." Well, guess why I give it to the official city stable, so someone takes care of him while I am not around.

I dont know if this is possible, but either make macros have more lines (like custom) so i dont need to use 2 macros when wanting to change gear. or make it possible to change more than one piece of gear per line, that would be awesome.

One Idea for getting rid of RMTs: We all know, some people just dont have the patience/time to farm like crazy to get the millions needed to buy certain stuff. How about making it possible, not on AH though, to use crysta at npcs to buy certain items. Maybe upgrade items for af and relic+1. Maybe even limited ancient currency or ancient beast coins (like max of one 100 piece, but making that specific one just tradeable to npcs so it cant be abused).
People can be "lazy" and buy stuff they need with crysta, and the money doesnt go to gil farmersbut to the company (and you'd have more usage of crysta too)