I am glad that we are getting more dungeons and they will scale to remain relevant/challenging throughout the expansion. However, I do not believe WoD launching with 8 dungeons was bad. I think between 8-10 is fine, but I want to see more dungeons added in the expansions life cycle. Before Mythic Dungeons and Valor upgrades, I had not completed a dungeon since I level capped and started Highmaul with my guild. So it didn't matter if there was 8, 10, or 12 dungeons.. I wasn't doing any of it. With the changes to the Dungeon system, Blizzard will feel more comfortable spending resources creating dungeon content as it will not become obsolete to a majority of the player base so quickly. As a raider, I hope they move from 13 boss raids, to maybe a 8-9 boss raid and 1-2 new dungeons. I feel it would mix up the locations and story lines. Just my opinion though.