I would like Horn of Winter back as baseline filler/buff ability just to get an extra button. HRW baseline without the haste component would be a nice QoL change and the spot could easily be taken by Sindy's Fury. Glacial advance needs a sick animation and possibly a special interaction during Pillar windows, given its row. Maybe a one time per pillar AoE knockup or extra burst to make it the default AoE talent.