Please provide a specific example of this in action. Or how you would apply this approach to the one example that has so far been provided (the bright cheerful artwork depicting two male characters in a romantic posture)
First if all, I haven't commented on the artwork, and have no issue with its existence. So let's not connect my comments to that.
Secondly, there are many possibilities. Options for enhanced exploration and social challenges and general play, choices in PC abilities as you level, mass combat options, narrative mechanics, shared story responsibility, more granular skill use options, alternatives for things like healing, encumbrance, food, disease & poison, crafting, and even spellcasting subsystems. Expanding equipment lists and adding culture to the species/background/class axis. Bringing back the warlord (or something like it), as well as other potential classes like the swordmage.
All of these things either existed in a previous version of the official game, or in a D&D-inspired game or 3pp (often for 5e), and any of it could be part of WotC's 5e and pique the interest of segments of the fan base who currently feel underserved.