Hello,
Now, just to make sure we don't get on the wrong foot here, this is merely a suggestion, and I have no intention on trying to enforce my opinion in any way - especially since this can be a rather heated topic - so even a simple no will be politely respected :)
First of all, thank you for implementing this mod - it has proven to be really valuable in all stages of game - both for figuring out what items are needed to construct something, as well as to figure out (early game) whether there are any unbuilt ghosts in the area. And I really like the visual design of it - it's clean and fits in well with the game.
The only question from my side is whether you would be willing to release the mode under a more permissive license? While it may not increase the level of contributions you get, it does give option to others to continue the work should you ever move away from maintaining the mod etc. Every now and then, people might just want to take a mod into different direction as well. And finally, people could learn from your code. I am dabbling a bit in the code of mods every now and then, and being able to look at code of existing mods was a big help.
Best regards,
Branko