Consider the following:

package test50

class Test50 {
	
	String foo
	
	List|
}

Invoke code assist at "|". This is what I see:

• the most obvious suggestions (those that start with List, or even exact matches) are shown below other suggestions that apparently are not relevant; this class is small, so it's not a big issue, a normal class has many fields and methods, so relevant suggestions are lost; this is very annoying
• if I choose "java.awt.List" and hit enter, no import declaration is added

Consider this slight variation:

package test50

class Test50 {
	
	String foo
	
	TreeNode|
}

and suppose I want to choose javax.swing.tree.TreeNode: the fully qualified class name is inserted, instead of keeping just TreeNode and adding a new import. This happens although I have the Code Assist option "Add import instead of qualified name" checked.