The basic needs for such a program are always the same. It is supposed to do your typewriting; you want some simple, easy to use formatting options, a spell checker. And of course, print the piece. The more elaborate functions include insertion of tables, diagrams, graphics, and pictures of your loved ones as well.
Another advantage of standalone word processors is the speedy loading time and lower use of computer resources. So beware, the more you expect from your electronic typewriter, the heavier it will get and you might well end up with the office suite.