As a dungeon runner...

[Elladie]

Okay actually tanks kind of play like dps so might not be as noticable, play them as healer then. I did anti-tower as healer the other day and I litterally had to use maybe 5 healing abilities (oGCD/GCD) throughout the whole dungeon. Might even be fine if I didn't use those if self-healing was used well. This meant that I was litterally stuck spamming 1 dps button almost the whole dungeon without even having to time oGCDs because damage was so neglible.

If you start feel redundand as a healer in an instance, I'd consider the sync broken.

So presumably you're saying that higher level players should be sync'd to the minimum level possible for realistically managing to clear the dungeon? People will love that ...