A number of small features, almost all with respect to intellisense.
Intellisense to automatically come up when adding an attribute, and only listing attribute types (like throw new only lists exceptions).
I've asked for this before, but vastly improved intellisense with enumerators. It's been announced that C# 2.0/whidbey/2005 will support enum intellisense in much the same way vb.Net currently does (http://weblogs.asp.net/cyrusn/archive/2004/05/28/143895.aspx)
I lost my little light-bulb icon to quickly optimize redundant using directives in recent versions...bring it back plz.
Intellisense to popup automatically when I go back and edit parameters within a method.
If I type CultureInfo.InvariantCulture, it'll be unrecognized, but reshaper will be smart enough to know I probably want to add System.Globalization in my list of using directives. If it's smart enough to know this, why doesn't it show up intellisense after doing CultureInfo.