a new Esenthel editor is in progress, but available for purchase.
I think it is worthy to watch this video:
http://www.youtube.com/watch?v=3xACb-0tl5I&feature=plcp
cool for teams as members can work online, and get project updates immediately.
asset import and management also much better than in the current editor.
some scripting features also integrated.

3DGS could also be improved in the same tempo as Esenthel...