Apparently there are interest there, and Esri may not be able to pull enough resource together to do this anytime soon (considering original version has been unchanged for quite a few years), I was wondering if there is enough commitment from user community to produce one?
There are a couple approaches, such as upgrade from the original JS version, or start from one of the simpler templates on arcgis.com and evolve that into something equivalent to the counterparts in sliverlight or flex.
The current arcgis.com is quite good at authoring, but kind of missing the capability to customization, and the those customizable templates are not as comprehensive as the flex/silverlight viewers. Pre-defined query/search etc are completely missing(think the deprecated Web ADF), so there are lots of work, but I think the user community can pull it off with collective effort.
Thoughts?