I'm not expecting ZOS to listen to such suggestion and overhaul the whole system based on my thread, but I wanna get community into discussing and adding to the idea of actually removing classes from ESO and letting players pick 3 of a bunch of "Base" skill lines and combine them for their own unique class and playstyle. Will take some rebalancing, but I think it's nothing impossible. Maybe make some skill lines mutually exclusive, maybe separate them into 3 categories like "tank", "damage", "support/sustain", maybe something else - you're welcome to add to the topic and improve it.
Who knows, maybe we'll inspire them into something big this way, like schools of magic and spellcrafting.