Sequels are well-known for being suckier than the original. This isnt always true (Timesplitters 2, Vice City) But for the computer games, there are too many updates or exapnsion packs to their games.
One company who calls themselves Maxis w/ EA Games have been creating many updated versions of many of their older games, but what about new material? All the Sims updates, Sim City 4 and such is all they got. Sim City 4 is an awesome game, but they should come up with some newer stuff.
Newer stuff is a good thing. Dont you agree?