What randomizer settings make a nuzlocke fair but still fun?

Similar strength on wild and trainer pokemon is the big one. With fully random encounters one route hands you a pidgey and the next hands the rival a garchomp, and the run is over before it starts. Beyond that I keep follow evolutions on so nothing is stuck unevolved forever, ban legendaries from wild encounters, and give trainers a modest level boost, more like 10 to 20 percent than 50. Also set starters to ones that actually evolve. Rolling a single-stage starter in a nuzlocke is a miserable first hour.