Basic Service.
" . . . designed so the wing roots stall first."
Maybe in a spam can. Have a look at the stall characteristics of different plan forms, elliptical and tapered stall across the wing evenly unless washed out. Various shapes various characteristics. (That's what the 50s designers were working on.)
Not all aircraft need control column deflection to maintain a turn. So many variables there are an almost infinite number of compromises. That's the fun part.