I'm guessing that it would have had a higher adoption rate than LoV did.
What players said: "We want pet battles like World of Warcraft has"
What SE heard: "Players want pet battles to work like Warcraft"
Including the hunting portion. Done similarly to gathering in FFXIV where we get our own nodes because otherwise it'll get salty.
Some sandbox would be nice. Diadem wasn't a terrible idea, just not all that well implemented. Rather than a time limit, have it be a zone that gives us some sandbox experience. Throw in some platforming puzzles that occasionally pop up for us to solve and a mix of fates.