Honestly I think we can agree Rengar is a broken kit and theme
How many reworks has he gone through and his gameplay patterns remain unhealthy and broken. Riot I remember vaguely you stating that you wanted less of a linear gameplay style and more depth to rengars kit and your nth rework did nothing. He is still linear and he still dives in to blow up someone - just a tad bit slower than before.
Old rengar had an on hit Q, a heal, and ebola and a somewhat cancer ultimate
Current rengar has an aoe minor delay Q, a heal and cc removal, ebola, and still a cancer ultimate.
What The Fuck