While googling for C/C++ refactoring tools, I stumble onto RefactorIT at (http://www.refactorit.com).
RefactorIt is a java refactoring/analysis too that bears some strange resemblance to IDEA (see the package dependencies pic) ;)
They have some interesting features I would like to see in IDEA:
1.. Show dependencies at package/class/method levels and metrics (more than the method hierarchy and the too simple jdepend plugin)
2.. Resolution of refactoring conflicts (One that I long for in IDEA...)
3.. Structure search (methods with parameter/return/cast of type XXX, classes with field of type XXX)
4.. API snapshot & diffs (great for us plugin developers and in general to track third party package changes).
I will eventually submit requests for these but I would like to get some feedback first.