Add an option to see numerical values for health, xp, super etc.
Add another dragon affix for fishing either they slowly catch fish or make it easier to reel in.(or a ring affix) Or an affix that lets them deal damage.
Add healing numbers similar to damage numbers.
Make different fishing rods have different power, so harder to get rods make it easier to catch fish.
Some way to see dps in game without needing an external software.