Only thing to do with your alts now - farm WOD transmogs/mounts. That's it. Game is extremely alt-unfriendly now. Too much grind, that isn't account-wide. Game is uncomfortable without full Benthic, full Mechagon rings and trinkets and fully leveled heart. Difference between my 410ilvl character with 65 heart and 380ilvl with 40 heart - is around 100k HP, i.e. +30%. And this is big difference. Alts just feel terribly weak in all kinds of content.