It may be splitting hairs, but I don't see anyone able to step up and address the mods necessary to ZE2 to support any new features, ever. We're basically stuck with ZE2, and we (as a community) make the best of it. ZE isn't 'maintained' actively, it just exists, and I haven't heard of any plans for an overhaul or new version. Compare that progress to the JVM and .NET CLR over the last 12 years.