A solution for the interaction between critical fumbles and extra attacks.
Examining the Gunslinger's Misfire mechanic as a cautionary tale for importing character options from other games. Why to never base a class on a "critical fumble" mechanic.
The "Bag of Rats" Problem is an issue that arises with RPG mechanics that trigger upon a kill. While kill trigger abilities are intended to reward the character for disposing of a foe, they incentivize players to metagame by carrying around a lot of easily-squishable pocket-sized creatures. Explore the solutions and find out which are best.