Quite a few young people on this forum lamented the passing of the OK Expressway livery and Northern, Venture and Diamond all refer to historic operators around the area now served by the brands. There's nowt wrong with having some traditionally named brands and liveries along with some modern, trendy ones. The X21 is now an ideal case for the former. And several brands (some good, some not) have been replaced recently eg Highwayman to Green Arrow, (quite liked both), Laser (so so) to See it, do it (naff), Lime (stupid name) to Coast & Country (not bad) etc. Pronto is a pretty silly name and not a brilliant livery. The Bishop - Newcastle route was the main line of OK (for both constituent companies, Emerson and Howe) so there's a relevance there, (which there wasn't with the OK1 route) and it was a brilliant livery. I hope Prince Bishops will be kept as it's a good brand (being pedantic, it would have more relevance to a Durham (Cathedral) to Bishop Auckland (home of the Bishop) route, but the name does cover the whole area as the  "Land of the Prince Bishops" because in mediaeval times the Bishop ruled what is now County Durham and Northumberland in the name of the King (end of history lesson).