I'm not sure I can do this again.

[Kyuuen]

First let me preface that I love both games and actively play both pending the patch. However, you're not being very fair:

Same.. kind of. I've grown kind of neutral towards WoW, but it's still that one addiction I can't kick.

Except they added zone scaling this expac, and they've just recently (in a patch mind you) expanded that to the entire world, one that is fairly large. Not to mention prior to this, they've previously shaken up leveling design with heirlooms etc.

The formula wasn't really changed here though, the feel of it most definitely has been improved no argument, but I wouldn't necessarily say the formula has changed. It's still the MMO standard tried and true receive quest, fulfill quest, turn in quest, receive rewards.

You're marginalizing the depth and success to the Mythic+ system here. It's the gold standard for dungeon design frankly. FF14 desperately needs SOMETHING to compete with it, as dungeon content in FF14 is beyond stagnant.

I'll give you that one. It's largely a feature I don't use due to having to use Party Finder instead of LFD. I simply don't like putting up with peoples ridiculous requirements such as needing certain addons or unreasonable ilvl expectations. So I avoided this system as a whole.

Very true currently, but you're also not taking into consideration how much it has evolved/changed over the years. Flex is an absolute godsend for the casual community.
To say that the formula hasn't changed when it's gone from massive sizes with little to no mechanics, to actual mechanics with multiple difficulties and then the ability to flex so no one is left out?

I dunno, I'll give you the flex raid part, but at the same time it feels like they don't try to break the mold enough. Sure there's a few fights throughout WoW that you can claim to have done this such as Malygos, healing the green drake in ICC, Arthas kill mechanic which has been used twice now considering Argus, Flame Leviathan, etc. Perhaps it's more of a time thing in looking back at all the raids and what's been done. But personally WoW's raids have felt kind of stale to me as of late. XIV's dev team seems to strike a balance in trying something new here and there to break up the monotony of mechanics such as Cruise Chasers timed event and Byakko's falling mechanic.

I'm not as well versed in PVP so my insight here is considerably less so. I don't care for PVP in either of these games (BNS was king for that IMO). They added templates and completely separated pve from pvp. That's a pretty big change. The brawls and stuff are pretty minor though IMO.

Them having given us separate tree's I can't give you though. That's something people have been clamoring for since WotLK, and should have been done sooner simply for balancing reasons. I remember there being specs purely for PvE, specs for PvP, specs that were crap in both, and specs that were amazing in both, simply due to balancing reasons. Now there's a certain balance within reason.