Well you've listed 3 mods that will never be completed (Dark Forces mod was already canceled, and the other two will simply never be finished) so if you consider that, your question may be somewhat irrelevant.
In any case, the big difference between Jedi Academy and the KotOR games is that all the games in the JK series have been moddable right out of the box, with developer support. KotOR series has not been, so I don't see anything like that being possible (or at the least it won't be feasible). Plus a mod of that scale simple would never get finished, just like three your provided as examples. I don't want to sound like a pessimist... just a realist.