One thing to be careful not to fall afoul of when you choose to remove features is assuming there is some kind of meaningful average user.

A good example is MS Office, there are an huge amount of features that only 5% of users might ever use, but the majority of users are likely to use quite a few of these niches individually, and if you remove all the low use features, you piss off basicly everyone.

I think the mistaken idea of an average user is why a lot of metrics driven software seems to get more and more useless with every update.

(I cant see the present/away status of contacts in the newest skype, really guys? )