[QUOTE=TheJamsh;687513]
Nice, I’ve actually been using this a bit recently for trying to package builds. Very helpful. Bonus points for providing source 
I’m really happy to hear that. Thank you.
[QUOTE=TheJamsh;687513]
It would be really nice to be able to change some of the parameters of the engine build itself as well, perhaps even running Setup.Bat with custom parameters before trying to package / build.
I have already made a few changes and it now includes running setup.bat with parameters (exclude/include platform, force, prompt and other arguments). I’m on vacation for 12 days now so when I come back, I’ll upload the app and push the changes.
[QUOTE=TheJamsh;687513]
I’m thinking of customizing the InstalledEngineBuild.xml file for example to allow Server Builds and remove Starter Content / Feature Packs.
I recently submitted a pull request that modifies InstalledEngineBuild.xml to allow Server and Client in binary builds. You can check it out here: https://github.com/EpicGames/UnrealEngine/pull/3129