The part below sounds pretty good at least -
Season 2 also adds five new and returning endgame bosses with the ability to target specific Unique and Uber Unique items as a drop, updates to renown rewards, updates to gem and stash storage (gems no longer take up inventory space), and updates to resistance and status effects. Paragon Points, Skill Points, Potion Charges, and Obol capacity upgrades will now carry over into a new Season once achieved with an Eternal or previous Seasonal Realm character.