Agree, and that is sorta what DnD one is doing... its like backgrounds in 5e its explicably stated in PhB that all backgrounds in the PHB is just examples, you could make your own by choosing 2 skills, and a combination of 2 languages and or 2tool skills... and a backgorund feature...
Meaning your Urchin,isnt locked in a sterotype vise, you could have gorwn up with entirly difrent set of skills then the phb urchin... how logical is it that a all urchin in the entire world have slight of hand and stealth ?... isnt survival and persusaion just as logical ?...
