Please give an example of a ttrpg that has made significant changes from one edition to another? I'm really just trying to understand what would be considered a "significant" change...
For me the change to 4E was pretty big, other than sharing the old names and the dice you rolled many things changed. But going from THAC0 and other oddness when rolling a D20 to always add in the jump from 2E to 3E? That was pretty cosmetic to me.