The new Allagan set of items needs to have a small customization option.

[NeoAmon]

Y not just do coil T6-9 with myth like how ppl did t1-5 with darklight and myth.
Just combine the 2 and stop complaining!
Yoshitomes are available so just use them till u please the RNG gods.
Also in monster hunter it was all about skill and the weapon.
Vanity > defence
Skill > defence
But attack power trumps all
U can go in with 0 defence and use a decent if not one of the best weapons and beat the hardest content.

I did T1-T4 in AK gear mostly. As for combining two gears together, that is fine if they were the same ilvl. You have to understand in FFXIV main stat is king and you won't be able to even it out with secondary stats. The rest of your post I can't relate to as I honestly don't understand the point you are trying to make.