And so is Potlatch... just about. (Insert obvious Flash reference here.)
Potlatch 2's core purposes are (a) being an intermediate-level editor and (b) annoying Germans. It's never going to get major new functionality or important rewrites, but for those of us happily using it, I've always intended to add and fix little things over time.
In the summer it gained support for the editor-imagery-index project, which provides a central list of background imagery suitable for tracing. Today it has a couple of improvements to the long-standing feature where you shift-click away from a way to add a new point (roughly comparable to JOSM's "Improve Way Accuracy" mode, but we don't do modes round here) - which is a really useful technique for TIGER fixup.
I've also added the ability to memorise tag combinations and recall them by a single keypress. Very simple: press shift and a function key to memorise the tags from the current selection. From then on, pressing that function key will add the tags to the selected items. (Those with long memories may remember this is a Potlatch 1 feature, and one I've always meant to add to P2!)
I have a couple of larger features which are 90% coded but were never quite finished, both firmly "intermediate-level" tools. As and when I get the time, I'm hoping to finally finish them off and get them out there.