Hi,
I must respectfully (because it's your work and nobody can steal it away from you) yet strongly disagree.
You're saying that security by obscurity is a good thing. It's not, and I don't think I need to make the case for it here as it's abundantly documented on the internet. I think you'd benefit a lot from having the source code opened to the community for scrutiny.
If it makes any difference, I'm not actually really interested in the software that handle requests from the clients. I'm only interested in the tools that are used to merge, crop and manipulate grib files.
Best regards,
F.