"The raids we currently have will become outdated content the day Firelands becomes available, the same way Naxx became outdated when Ulduar came out and Trial of the Crusader became outdated when ICC came out."

There's a difference between "outdated" and "irrelevant" or "trivial." Outdated just means exactly that: it's no longer up-to-date. But there were still weekly, if not daily Naxxaramas PuG's while Ulduar was current. There were ToC PuG's while Icecrown was current. ToC 25man dropped the same ilvl as the Icecrown heroics. Naxx 25man still dropped better than 5man heroics.

For me, the disappointment is that the content loses its replay value.

Molten Core has so little replay value because it doesn't offer anything - there's no challenge and no relevant gear.

But back in Icecrown, ToC had replay value. In Ulduar, Naxx had replay value. The gear mattered to a large portion of players.

But now with Firelands, you're killing off the replay value of the tier beforehand. With ilvl 365 stuff coming from *DAILY QUESTS* and ilvl 359 from heroics, you're losing any semblance of relevancy. The nerfs just kill it off by removing the challenge.