OP has a lot of true words.
Firstly, the part on mechanics :
I dare challenge anyone to tell me that what he said is false. In the entire game, there is nothing that can't be done at minimal ilevel (done with devs team sure, but they're still humans who just happen to know perfectly the gimmicks) and without echo. The only mean of ilevel is to get enough dps to get the fight done.
As a matter of fact, T6,T7 and even T8 have all been done with under i95 on average by super hardcore players (T6 and T7 by more average people now with same ilevel), which leads me to an estimation of i100 roughly for T9's minimum requirement. Which means anything above i105 (let's get a good error margin) is irrelevant. You do not need it. You just need to know the mechanics, and you'll faceroll the fight.
And yet, T5, with i96+ and 15% echo (leading to i115 at least in effect)is still a road block. Titan Ex, with 25% echo (i125+) is still a road block. And you could have 100% echo, they would still be a roadblock (around i230...).
(I took HP values as a basis, as 20 ilevel add around 1k HP for tanks, and they have around 7k at 90, 8k at i110)
All is do-it-or-break-it, and it becomes boring after 8 month.
Also, the groups.
Am I really the only one to find the 4/8/24 strict teams boring ?
Am I the only one wanting to go in coil with 10, 12 or even 20 people if I like ? Just give the regular 2 chests for the whole group and that's all. I want to enjoy the game with friends, not killing boring stuff with 7 other people only.
Example : FC's size. They are either 8-men, 16, 24 or enormous HUBs. There is no need of in-between. And people don't want in-between sizes.
meh. The only dungeon with some sense of "difficult" dps check is Haukke HM. Brayflox in i60-65 team is just as easy as in i90+. The only change is the loss of SR possibility, and the hardest boss is sadly enough the 2nd one.
inb4 : "but the last bomb is..." nope. LB it, and bye-bye dungeon done. with iL60 you have LB2 since a long time when you come to it