Totally agree on those observations.

I've played MMO's for over 12 years and there's no way to please those that want a challenge. If any 1 team can down it the content will no longer be considered challenging. If they can't then that challenging content will not end so well with them.

Yet coil and it's difficulty doesn't need to change, in fact it can get harder.

Thing about optimizing for more players having fun is having separate forms of entertainment all which progress at a steady and enjoyable pace evenly for every category of player.

For the so called hardcore and challenge lovers Ex Primals > Coil. This current method is self-explanatory why it's okay.
For those in between players Dungeons > CT. As time passes gear is obtain and content is cleared.
For the casual crowd Dungeons > open world bosses (Fate Primals) > CT. Simply having the bodies to tackle the content is the easiest and simplest way to please this crowd since it also ends up the most social form of interactions.

Then adding something that breaks the mold in between for everyone that's simply there for the sake of fun, grinding, and getting additional goods.

Beast Tribe Dailies
Hildebrand
Main scenario
Relics
Golden Saucer
Chocobo raising
New classes/jobs/races
etc

(Did not touch and don't plan on touching the subject of PvP and DoL/DoH)

Though I'm interested in seeing how things will change within the community once Golden Saucer is out of the way as well as other minor things the dev team is investing time in.

I never expected FFXIV ARR to have all it's kinks worked out within the first 6 months or by the end of the year. I would've been surprised if CT2 and Coil2 were released on the same major patch as well as Golden Saucer not being delayed. Since it's a lot of content they release between major patches.