It's more and more painful to level sync the higher my item level is getting because I'm getting used to the benefits of having high end gear. The time difference between how long it takes to do end game dungeons versus older ones keeps getting more dramatic with each patch. I'm spending more time doing things that give me hardly any benefit compared to things that provide much more benefit. 10-15 min differences between high and low dungeons is getting pretty extreme.

Pacing needs to be more uniform. Please consider options from GW2 and FFXI to create more space between item level jumps in order to preserve the pacing of your game. Either that or cut down the item level jumps. Either way these World of Warcraft style item jumps are incompatible with level sync in the long run.