Was just poking around the internet and stumbled across LOKI, which can patch kernels to work around a locked bootloader. Has anyone considered this route?
[LOKI] Bootloader hack official FAQ thread | AT&T, Canadian Bell, Rogers, Telus, Virgin Samsung Galaxy S 4 | XDA Forums
[LOKI] Bootloader hack official FAQ thread | AT&T, Canadian Bell, Rogers, Telus, Virgin Samsung Galaxy S 4 | XDA Forums