Another income stream idea for Square Enix: Crowdfunding for content
In addition to the premium app which will be released soon and the favorable mog station with plenty of high quality premium offers like emotes, I suggest that SE offers me another possibility to spend more money on the game besides my monthly sub.
SE should offer crowdfunding for implementing content, bosses and features. This way SE sees directly what is demanded by the playerbase by offering multiple options what they could implement for a patch. Premium backers can then be rewarded with additional pets, mounts and other high-value stuff, which can be shown-off ingame to poorer players.
Another advantage for SE is that they don't spend money on unpopular content anymore, which will then be also advantageous for me as a shareholder.