Even if your 3-4 months into multiboxing still trying to gear out your character, or your a fresh one leveling up, there is a big ray a sunshine on the horizon for everyone.
Expansion means gear resets, lvl 75 blue quest rewards will start replacing Season 4 / T6 gear etc, by the time you hit 80 a full suit of quest rewards will be far superior to anything currently in the game. This means EVERYONE is on the same starting ground. The expansion is only 6 weeks away, were all equal