While Nintendo does continue to advertise older titles(Last year, there were tons of ads for Mario Kart DS, Animal Crossing: Wild World and Nintendogs), I feel they contradict themselves sometimes by letting some of their own titles fend for themselves(Excitebots, Fire Emblem: Shadow Dragon, Electroplankton). You also have to think of appeal as well. Grand Theft Auto and Grand Theft Auto sold ~2 million and ~3 million units respectively and while those are good numbers, Grand Theft Auto's fanbase is too accustomed to non-top view Grand Theft Auto that goes back is counterproductive in a sense.
Pixel Art can be fun.







