It has changed the dynamics of fighting but Im not complaining about it like some I saw in battle yesterday did.

If I EVER go into a battle where someone says "lets get to 3 mins and wipe for buff stack" then I will leave that party, but yesterday I helped in Titan HM and saw people really trying.

Heart phase was completed on all runs, but after the first wipe an ilvl90 DRG started to complain about the echo, well 2 things:

1. What are you doing in there if not to help people?

2. What difference does it make to you? this content is yesterdays news at your level.

Some parts of this game will not be possible even with a full stack, yes it may need tweaking at some point, but for now its too early to complain.