The latest patch fixed a lot of things and it seems to work fine for me at least. The coming of Reforged shouldn't be a problem. As long as you don't use any hacks, exploits or 3-party-tools, all custom maps should just load up with the Reforged World Editor as well. Making custom models and skins might not be advised now, since Reforged will bring new graphics, so making them now yourself would pretty much go in vain, unless you plan your map to be always played with SD graphics. Also, Reforged might bring some more functionality to the World Editor, but I don't think there will be anything that significant that you should wait for it.
