I think we should be able to customize what is randomized, because sometimes randomizers are to easy. I did a non legendary run and the augur had a freaking corphish instead of rayquaza and most of the gym leaders had LC pokemon so i would like if you could customize what you want randomized example you can choose if you want random starters and you can choose if you want random trainer pokemon or random items random ecounters etc. The only challenge i have had in my randomizer run was Damians mega Rayquaza.
That would make game easy and a bit boring.
Not trying to be mean or something just giving a suggestion.
Honestly, randomizing only certain parts of the game would make way for some interesting playthroughs.