So the topic of Mythics from WoW comes up in FF14 all the time it seems as a better way of increasing the difficulty of the current dungeons. It is painted as a wonderful addition that everyone is just dancing in the streets in Oggrimar celebrating all day.
Positives
1. Allows you to experience Savage level - Ultimate level difficulty in something like Grand Cosmos.
2. Instead of roflpwning and pulling the entire instance pulls are coordinated and appropriate cc is done to control getting owned by abilities you would otherwise ignore.
3. In WoW there is a gear reward that scales as the difficulty goes up. This has a positive BUT ALSO A MAJOR MAJOR downside that I will cover in the negatives area.
4. Players searching for harder content outside of raids have an option
5. The dungeons you get in FF14 patch 5.0 are now just as relevant as the dungeons you get in 5.5 because the boss gear would now matter as it would scale the ilvl difficulty up.
Negatives
1. Dungeons have set loot tables. So in patch 5.0 we all started and had an ilvl cap. Now say you farmed Twinning in a +10 difficulty (Extreme mode) and finally got the drop you wanted! You are super excited obviously. Now say that piece is your BIS item and now patch 5.1 comes out with a ilvl increase. Now you have to go farm that EXACT same item again but just with a higher ilvl.
2. In the WoW system they have chosen to have Affixes that affect things like puddles of blood spawning that causes damage, random quaking damage that goes out, Tyranical modes that make bosses hit like trucks. The downside to this system is some weeks the Affix rotation is great and everyone is happy and other weeks are you worst nightmare and healers/tanks do not bother to login.
3. In WoW outside of raiding this has become your only gearing system. Mythic Plus single handily killed crafted gear which in FF14 is an actual gearing system. Even the most basic Mythic level gives gear better then crafted gear making it meaningless outside of 1-2 pieces that might be BIS from select professions.
4. Due to the never ending scaling nature of the system from 1-infinity the gear caps out on ilvl after a certain point. Only point in doing higher levels is bragging rights on an outside leader board called ....RaiderIO
5. RaiderIO. The bane of casuals and the non worry of organized groups. Due to the way Blizzard has chosen to implement there system you cannot reset the timer after you start a run. This means if someone rage quits after the first boss then you are screwed. There is also no way of choosing you key so you are stuck with the dungeon you get. The community now has a required addon called RaiderIO that has a scoring system not determined by Blizzard but outside forces that track and force you to download updated data.
3,000 character limit for post is just horrible FYI