Personally it doesnt bother me at all. Coil 1-4 has been a pushover for months already for the group im playing with. On shiva you can reasonably PUG that with a degree of success.
The real concern here i have really is whether the new content is going to last us long enough to keep people interested for another 6 months before new coil is out.

Until now youve had to learn your class obtain gear etc now that you achieved a certain level of play the learning curve wont be there its going to be all about boss mechanics.
I think by now nobody has any delusions that new content is going to be on par with Turn 5 because they wouldnt make it as accesible to everyone.

One could hope that once more people had a crack at it SE could change their developing outlines and give us some more stuff to kill. I enjoyed WoW model where you had Hard Modes to aim for at least it sort of doubled the amount of content.

I dont understand why so many people are bothered by this at all you have your groups possibly linkshells containing people with similiar level of play so you dont interact with the "casuals" outside random DF dungeons.

Echo buff or not T5 still requires you to be able to deliver some reasonable level of play and that probably isnt going to make it pushover as some people think.