I assumed it was so you could carry only a wand and cast spells.
(Perhaps to attract a certain sort of wizard?)![]()
Is it one or the other? Either use a foci or use the spell component pouch?
Could you not have a pouch for when you cant reach/use your Focus?
"you wouldn't deny an old man his walking stick"...You wouldn't deny an old man his bag of animal feces...
On a more serious note, I thought that codifying and giving special qualities to the different foci (what 4e did) was a move in the right direction. It is both thematically sound and mechanically interesting.