Many times I will see a node down and I know it just needs to be removed from monitoring. Now I need to enter manage nodes and search for that node and remove it from there.
A delete node button on that same screen would be much easier and make
Although I think it's annoying when you have to delete a node, until there's a possibility of undeleting a node (see http://thwack.solarwinds.com/ideas/1070), I would prefer to not make the delete function too accessible.