Is anything being done to fix champions who rely on sustained damage?
The entirety of season 8 has been focused around burst damage. Champions who need significant time to output their damage (i.e. Kennen, Cass, etc.) have been largely irrelevant all season, because the vast majority of the viable roster can kill them in half the time it takes for them to output their damage, and their kits tend to be more reliable.
Is anything even being done to bring them back into relevance?