SE is walking into a major grey zone by adding "moogle coins" as an assumed virtual currency. This is an exploitable monetization scheme, and even though it's only in a mobile app, I'm expecting SE is adding this to test the waters of possibly forcing a similar version to Mog Station. If this happens, the game WILL lose players and some reputation.
The second part of this complaint is of a repeatable microtransaction option. Sure, it's for a very minor part of changing market board listings. But, as stated, "Additional services for use with coins will be added in the future based on user feedback.", makes me VERY suspicious on SE intending to add even worse repeatable microtransactions in the future. These are gameplay affecting, even though limited to the market board and very minor, SE must avoid these options to not alienate most of the playerbase.
I might seem to exaggerate, but having seen the past 5 years of absolute nonsense among a ridiculous amount of games, I have no doubt that SE is planning something awful for the game, which will hurt the game's population and general reception.
The Moogle Coins must be resisted by any means and there needs to be a backlash before it's too late (unless you want me to say "I told you" by next expansion). To clarify, I am 100% fine with a monthly fee, as I know it has to be monetized in some way, but nothing more than that.