Since VLC, most VLC-related releases include an auto-installer which places the scenery files in the correct locations, and offers the choice to automatically add the scenery to the FSX Scenery Library. I've been looking at releasing all further scenery this way, including freeware, plus offering a script which other developers can use for their own scenery. (Or any other addon, for that matter, but some work would need to be done on the script.)
The choices here really relate to whether you are happy to let a freeware installer do everything, or everything except updating your scenery.cfg file, or you'd rather control the complete process from start to finish. Bear in mind that my payware projects will always use an auto-installer.
