I do agree that a lot of development time/cost is spent on content that gets old fast, with the main offender being dungeons. To optimise cost efficiency they are made extremely linear, simple and repetitive. Participation in this kind of content is very high, but not necessarily for fun reasons. Many people do them reluctantly each day because we are encouraged by high rewards; they are easy to complete and are the fastest source of tomestones when entering via roulette.

My preference would be a reduction in the amount of instanced content, replaced by more frequent additions of fields zones like say Coerthas Eastern Highlands for example. Currently we don't get any field zones for 2 years, then get several at once in an expansion. So my idea would be to spread those across the patch series, giving more regular opportunities to go questing in new lands. In exchange the expansions would be more heavily focused on the introduction of new jobs, raids, pvp and new types of content.