I know this has been brought up several times, but here I go again. The skill reaches max level (20) around Lv75. After that, character progression feels overly diminished.
In POE, you get to max skill gem level around Lv85-90, and after skill gem reaches max level, you can still corrupt it, try to grind alternate quality skill gems, grind awakened skill gems. The exp doesn’t feel wated from the skill’s perspective until very late game.
In LE, there isn’t much to work with for skills after reaching skill level 20 (except few affixes that increase the level cap of skills). Really hope there’s more to do regarding skills reach max level.