It's rather sad that we maybe won't see this features implemented on any map editor, but maybe someone with a lot of knowledge will implement it with the right motivatons <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt=":D" title="Very Happy" /><!-- s:D --> , let's hope it can happen!
I personally think that DeepSea is a bad editor, first of all it's not free, that's not good and it's expensive (at least my opinion), WadAuthor might not be free but it was cheaper and easier to use for me, so that's why I still prefer it from DB, even when I think that it's a really nice map builder, the 3d editing option is a really clever one, and it can help you to make a the map's textures work as you need, but it's difficult to use for me at least.