"Playtesting in the Lost Caverns of Tsojcanth. My dwarf just slew a lurker with a well-timed crit to save the swallowed paladin." - Monte Cook. "Playtested in the Lost Caverns of Tsojcanth. My cleric burned several downed trolls before they could finish off the unconscious paladin." - Bruce Cordell.
One of the posters at enworld, 1Mac, noticed that these sound suspiciously like a Mad-Libs-style 5e playtest tweet generator.
Inasmuch as I have a wheelhouse, random generators are my wheelhouse, so behold the
Playtest Report Generator
Repeat until the new edition is completely pieced together!