I believe that it requires low development effort.
I noticed that "auto" connect sometimes makes poor choices to connect to a country as far as 8 hours flight away although there are much closer and better-performing countries.
Option 1) I suggest that by default "auto" connect should choose servers from our favorite countries only. My logic is simple, there is no point in connecting to a country I don't prefer.
Option 2 ) Alternatively, a new option "Auto connect to favorites" can be created.