Ashley this sounds like a you problem, a Scirra problem.
1st I never encountered a situation where you didn't tell me to remove all the addons and strip down the project.
2ndly, it sounds like you guys would need more developers if these issues overwhelm you.
You already put the QA on the client.
You can't get far with C3 without addons, if they are harder and more limited to make, good luck getting people to make them for the community for free, if at all even.
Why don't I see such scandals in other game dev communities? Why are other game engines open source or with source public?
These scandals appear with some sort of a frequency here, and there are many clients vs you right now in this thread. Perfectly normal, right?