No my answer to keep players engaged and paying subscriptions is to add to the game but not in any way that obligates people to change the way they are already playing.

Literally DON’T change things like current classes, they are all masterpieces.

What if there were other zones added but are for say levels 30-50? Just more options for places to level, maybe with different crafting materials but completely optional?

A new class but instead of making them completely over powered to sell the new expansion they are meticulously engineered to fit into the 1-60 experience. Anything added keeps the same slower chess like combat.

Like I love WoW as it was in 2004 but I think it can grow into something to attract a whole new generation of players, it just has to be done right and maintaining the feeling and balance of the original game needs to be at the top of the priority list.