Honestly its not necessarily difficulty but the fact that Classic dungeons require more focus and attention. Even though on average, they’re easier. Maybe its just the fact there are slightly more interesting things to do and that are actual functions to execute in classic dungeons.
Aggro management. You get a cocky player in your group? They pull the aggro and it can easily lead to a wipe if you don’t recover.
CC matters a lot. Having at least 1 class in your 5 man with a strong cc is desirable. That also leads into class composition.
Slower pace of dungeons. During our pre-raid gearing 5 mans we won’t be able to exactly handle 5 packs at a time. That is called a wipe.
You can actually plot out how you want to gear up pre-raid through 5 mans in Classic. Its fun. No you don’t need a spreadsheet… Just grab a notebook.
That is another thing. The only thing you manage in BFA is your stats and transmog. In Classic the only reason to play alts was for A- To try a new class, B- To get professions. You truly have a main and the “I play alts because I’m bored” doesn’t really exist like it does in BFA. Everyone had alts. Everyone will most likely have alts. The difference is that you will have a main you’ll have to focus a lot more on and you’ll want to focus more on. I get so bored with BFA I stop playing my main altogether sometimes.
I’m an alaholic myself and most likely with have like 20 characters or something. I’ll play them on my downtime’s downtime. In my downtime from Raiding I’ll be farming. Then after that I can play on my fire mage alt. There is so much to do one toon I think I’d only ever play an alt if I truly get bored.
As of right now I do have over 30 lvling alts in BFA. I’m actually at character max, 50. In Classic I won’t care about 30 alts, I’ll love my main and I’m looking forward to it.
When you log onto your main in Classic you’re going to know which dungeon to hit next and work towards that goal. You really need that +14 agility cape. You can pvp on your downtime and really enjoy it. You heard about some wpvp going on from guildies. Go enjoy yourself.
To play the game you’re forced into the economy no matter what you do. Right now I can casually play BFA without losing at all. I can do any LFR, goof off in BGs because who cares, and engage single player in the content. Playing single player in Classic is boring… Have fun farming mats and killing the same lvl 60 mobs over and over again. Thats all you can do single player. In BFA, I can do all of my world quests solo, go around and engage in pet battle solo, collect transmog solo, grind rep solo, etc. etc. etc…
In Classic its 100% about server community.