Go back to making them properly instanced based. Dungeons, trials, etc. Make the non-usable currencies from trials no-one runs part of them or something. I stopped running Eureka after level 10 in Anemos. The weapons are nice, but the time requirement to get a full set is so ridiculous that it made some of my friends quit til the next expansion.

So many people were looking forward to Eureka, but all it is a non-essential grind. No decent selection of crafting materials, just materia etc. and no mount in Pagos, they could have just reskined the T-rex or something.