I am not sure it was really a choice from LR to open source their scenery tools. AFAIR, they use libraries such as CGAL that are released under GPL, a contaminating licence, in their toolkit.
Opensourcing code geoconvert would also let anyone reverse the process and extract potentially expensive proprietary imagery. That might be a problem for third party payware developers. And their might be a lot of IP exposed in these tools. I would also be afraid of "custom builds".
Developers need high quality tools, and the best we can do today is report any reproducible bug with a set of files. I am not sure if this forum is the best place to track issues though...
So while I am a fervent advocate of open source, I am afraid it is not going to happen. Let's hope IPACS surprise us!