What is genuinely more difficult in Classic is solo questing. Aside from the famously broken frost mage, solo questing in Classic is significantly more dangerous than modern WoW and FFXIV. This was one of the things I loved about Classic. The world is a threatening place. Things hit you very hard, they take much longer to die and class resources don't last for very long. But I admit that by today's standards it's tedious. It's not super easy to do but it's not necessarily interesting either. And the downtime between pulls can test people's patience far more than the combat itself.
But the raid content, oh I knew that wouldn't present anything resembling the challenge it did before. When you have a highly coordinated team with at least years if not over a decade of raiding experience behind them, bosses were doomed to fall over fast. They were absolutely not designed for that level of team play or experience. Back in vanilla the raiders were newbs, and Blizzard were newbs to boss design. It was a very different time. Never mind how so many useful Classic add-ons now simply did not exist during Vanilla, which is another advantage modern players have.
I am curious to see how Sunwell goes, the final raid instance, because there was a boss in there notorious for making guilds fall apart. I don't expect it to present the same challenge as before, but it will be interesting to see how long it will stand up against today's players.
It 100% is nostalgia bait. With the TBC launch being soon I am really wondering how Blizzard are going to maintain Classic. Wrath is next but after that...well lets just say a huge amount of the playerbase agree that Cata is when WoW began its downfall. It's a controversial expansion to say the least.
It would be funny if they just rebooted Classic or just stopped at Wrath instead of continuing on into Cata because that would be, in a sense, Blizzard admitting that particular expansion was the beginning of a wrong turn.
And just to note before anyone perhaps accuses me of not liking the huge jump in difficulty in content Cata gave, I actually really enjoyed it. However it was too heavy handed from the beginning so it alienated many players whose skill level was enough for their goals before and then suddenly it was not. The difficulty increase should have been gradual, not a sudden big change. Huge mistake by Blizzard.
It was also controversial due to the manner in how many zones changed. To this day I'm still salty over what the goblins did to Azshara, lol.