So with no DM buffs will MC and Ony be harder raids?
Seems like a pretty logical conclusion. I don't see hardcore guilds having any real problem defeating them though. I hope they are tuned to be difficult at first, then as subsequent time/patches are released they are tuned down slightly for the more casual guilds.
Onyxia received nerfs during Vanilla ( https://wowwiki.fandom.com/wiki/Patch_1.3.0#Raids_.26_Dungeons for example) and those changes should be included in the patch Blizzard is using to base Classic on, so I wouldn't expect further nerfs.
Yeh, I still wonder if they will tune it up to begin with, then bring it back down to 1.12 levels? While they are adopting the 1.12 patch as a base, they may still want to provide the authentic difficulty scaling/progressive content release pattern.
This is the real question. While I don't think it matters to a lot of players, there were a lot of tiny nerfs to older raids throughout Vanilla, some reported in patch notes and sometimes not at all. I think they'll probably just end up putting out the MC and Onyxia that was in patch 1.12 as opposed to the stronger, earlier versions. But I don't think the nerfs are super impactful and people should probably smash through MC, even people just learning the fights. You can enter MC with a guild of only 10 people who've raided MC before and clear it (ignoring the mats for dousing the runes and needing enough tranq shots for Magmadar that necessitates multiple runs before full clear)