So, ranking-based rewards are implied, but not defined or implemented yet. Thanks.

Well, I guess how much I care about this will heavily depend on said rewards. I see three basic outcomes.

1) Inconsequentials and conveniences. Ampies, Manyu, dragons, seeds, maybe some gems or energy. Maybe 5*/6* tickets or dressblooms for those super high ranks. I see zero issue with this. Let them wave about; it doesn't affect me.

2) Exclusives. Some 5*s or 6*s that cannot be gained unless you rank during a given time period. Perhaps they get added later on for the rest of us in a gacha or a reissue, perhaps they remain permanently exclusive. Not a fan of this, especially if the exclusives are significantly more powerful (or have special abilities, etc) than normal ones. On the other hand, though, it's not like 6*s are normally within my grasp anyway, so... Eh. Don't like, but doubt I'd leave over it.

3) Strong-arm tactics. It becomes harder (or impossible) to get the event 5*s within the alloted 2 weeks if you're not global-ranking-quality. Perhaps they let higher-ranking players regen energy or raid points at an increased rate, and events start to be balanced around THAT, instead of the normal regen rate. Or to put it more bluntly, if you don't pay a minimum of $XYZ a month, you won't be able to do any content well enough to acquire anything. That I would have a problem with, and would likely be a very swift exit for me.

I hope for #1, or at the very least a #2 that opens up to everyone after a few months or so. Can only wait and see though.