My experience using the Maven support in IDEA is limited so far.
Is there some support for adding new dependencies to a pom.xml?
Alt-Insert in pom.xml.."Generate...Dependency"
Look through (indexed) repositories (both local and remote), including ones that are declared in current pom.xml
Let me SpeedSearch through a list of all candidates
Let me select one, allow me to exclude some transitive dependencies (if applicable)
It could be smart, eg inside <plugins> it could offer plugins only
The basic idea is getting from "I need to use some library foo" to "getting the relevant stuff into pom.xml" as quickly as possible.