PHB/DMG/MM is my choice of format. They're also registered trademarks of WoTC. I'd be surprise to see it go.PHB/DMG/MM is my choice of format. They're also registered trademarks of WoTC. I'd be surprise to see it go.
DUNGEONS & DRAGONS, D&D, d20, d20 System, WIZARDS OF THE COAST, Player’s Handbook, Dungeon Master’s Guide, Monster Manual, D&D Insider, all other Wizards of theCoast product names, and their respective logos are trademarks of Wizards of the Coast in the U.S.A. and other countries....
Yup, see credits of 4th edition Monster Manual:
Sure, but that doesn't necessarily mean they have to go with the same 3-hardcover format. Conceivably, they could do a basic game box set with a "Players Manual" and "Dungeon Masters Guide" booklets (the DMG which would include a bestiary not unlike that of Expert D&D), and then come out with a separate hardcover Monster Manual filled to the gills with background and ecology info.Each names seperatly are. If you keep names trademarked for use of core books, chances are when when new edition rolls those same names will be used again. 4 editions of D&D have followed that pattern, i'd be surprised if the fifth one doesn't use their trademark.
There's also no hardcover option. Even experienced RPGers pick up the box.The Doctor Who game was expressly designed as being a beginner-friendly RPG, and the box set aspect came with that.
I'm not sure what your point is here.The "Pathfinder Beginner Box" was not named by chance….your own perceptions are somewhat skewed.
So are small plastic cases, why not put D&D to one of those?Box sets are visible, accessible and identifiable as games by general public and that's all there is to it.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.