How does it matter if m+ is still better source of AP? You will still do them for gear, but if your goal is AP then m+ is better for obvious reasons. And as we see m+ wasn't enough at AK15 to get anything reasonable for Krosus. That's why all your calculations are useless.
You are wrong, cause we talk about now, not 3 months ago. Or 6 years it seems since you bring all the old stuff up. Really, in 2 days(wich is present) you are given AK 25.
How are we going to talk about mythic Krosus with you if you never raided before on any of the hardest raids? You already got boss requirements wrong. Or you could prove me wrong with some logs long ago.
I raided Sunwell(very few did) I raided heroic LK, server 2nd 10man back then. Also one of the first 25man HC LK. I did 2nd server best heroic Blackwing and Cho'gall Stopped before . Then I played casually a bit in Cata, 2 months in MoP then came back 2 months before HFC. And when I came back I went to my casual guild. Now we do heroic. And I've parsed top logs in both Worldoflogs when that was the thing, and now I do 95% on almost every boss I do in Nighthold(not everytime)And I do that with every character I have in there. Yes I am in a casual guild, where most have irl, I got kids, I got a job, and I don't bother with mythic cause I like where I am. A "casual" is a wide term, just as mythic raider is it seems. Does not mean shit when it comes to "know" requirements for Krosus. You need around 45 traits in mythic Krosus. Inbefore you say 54 wich is blatantly false proven by blizzard. Only 3 bossed was tuned for that. And in 2 days you can get even 45 traits pretty fast.
It's not like any sane person is going to drop his job to play rebranded diablo 3. We already have about 10 guilds disbanding after beating Guldan. And there's going to be even more in the future. Yes, that's exact reason why raider plays a lot less than a "casual" on average: you could play 3-4 days a week and still clear hardest raid. "Casual" doesn't know what to do to achieve that.
So you go back to that casuals play more? Cause they certainly doesn't. Don't really know what you want with this, why you bring up new stuff, I don't know. And casuals know more than what you think :P You really think every casual haven't played hardcore before? It starts to get silly.
Why? Are you THAT clueless? Until the Legion gear never got procs beyond the difficulty it got obtained. Not even mentioning lockout stuff. There's no reason to do old things unless you're really desperate for an exact item and stuff like UVLS was really uncommon.
Oh I know, it was only 10 ilvl then wasnt it? In WoD it went to 25 WF. And yeah, some trinkets for example were bis almost the whole expansion. DST in TBC for instance, was awesome till sunwell. And while we did Sunwell I did BT as well for that trinket that never dropped. I bet you never did that cause you are a "mythic" raider with a casual mind..