Everything people are scared Tencent might do to D&D has already been done by Hasbro: the MMORPG conversion (4th edition), canning all the staff (happens every few years, and to Magic too), adding DLC (just take a look at the current official app), walling off the garden (three tries on that one: once with 4th, once recently with the OGL stuff, and once with the limitations on animations in map applications), even the movie.
D&D the rules system has been a corpse for years, that the designers managed to make 5th into a passable game is a miracle. Play Pathfinder, Blades in the Dark, Call of Cthulhu, Savage Worlds, Fate, Vampire, GURPS, Shadow of the Demon Lord, Dread, Worlds Without Number, Mothership, Numenera, Mork Borg, Everyone is John, any of the dozen variations on those games, or one of the hundreds of other options not yet listed. They pretty much all run as well if not better than D&D.