First, I'd like to say what an amazing application L3DT is. It seems as if my team has found the terrain solution that we have been looking for.
I have two feature requests, which you'll have to forgive me of, if in my ignorance I have overlooked somehow.
It would be handy if the user could opt to export up to four alpha layers into a single image file (RGBA) with a coefficient adding up to 1.0. There are several splatting effects used in realtime games that could benefit from this addition to the pipeline. Being able to export directly to a file format with this structure would definately save time for game developers, using such a method.
It would also be useful to be able to edit alpha maps after export, in external applications (in our case our map editor), and then reimport them back into L3DT for a regeneration of the texture map. This way artists could edit the layers by hand in whatever app they choose, to facilitate roads and the like, and simply bring them back into L3DT for regen.
Thanks in advance for replies and such a fantastic tool!