+1.
I’ve had huge issues with building projects using the 4.11 source-built engine, and the disk space requirements for having both launcher and source engines and switching projects between them are rather ridiculous. I’d really rather avoid maintaining a source-built engine except when absolutely necessary.
Related request: would it be possible to include debug symbols for the various C# programs, such as UBT and AutomationTool, with the launcher? I realize most people will never need them, but once in a while I really need to step through the code to see what’s happening during the build/package process.