thankfully Disney is a largely hands-off parent company, seeing how Pixar and Marvel run almost completely autonomously. It seems Disney's only concern is profitability, and both Pixar and Marvel (particularly Marvel Studios) have provided clearly positive results (Toy Story 3, Iron Man 2, Thor, Captain America and the Avengers - remember that Incredible Hulk and Iron Man came out before the sale of Marvel to Disney).
Seems all Star Wars fans should be excited rather than concerned. The franchise has been considerably cheapened by controversial re-edits, tragic writing and appalling direction (Hayden Christensen is a very talented actor - Attack of the Clones destroyed his career (though luckily for him not nearly as badly as the OT did to Mark Hamill and Carrie Fisher's).
Disney products usually have a level of polish that makes everything better (Tink's fairy dust perhaps?). Hopefully we'll get our Sequel Trilogy and once done, for other films, they'll go in a different direction... i'd cry if i saw a fourth trilogy.