Purposive Capitalization
It is Desirable to Capitalize at Will. A.E. Milne does this in the old-school Winnie the Pooh books, to great comic Effect. Remove the ban against voluntary Capitalization within the sentence, if the writer is so inclined. It adds a further layer of nuance, complexity and Xpression. From college papers to technical journals to novels to newspapers, refuse the lower-case at Will.
Logically it follows that any letter within any sentence may be capitalizeD.
Among other fun effects, this allows one to emphasize syllables as if eNUNciating VERy CLEARly.
HOPEFULLY ONE CAN AVOID THE SHOUTING EFFECT OF THE ALL-CAPS SCENE. So USE A LITTLE JUDICIOUSNESS ABOUT IT. THAT'S THE DEAL WITH ALL THIS SHIT - YOU CAN DO WHATEVER YOU WANT. BUT WHAT YOU WANT HAS TO BE GOOD.