There was a lot of proprietary sun stuff that got yanked out in the 8 -> 11 shift, along with the addition of the module system that makes reflection to hack in

There was a lot of proprietary sun stuff that got yanked out in the 8 -> 11 shift, along with the addition of the module system that makes reflection to hack into dependencies a lot harder (IIUC). Upgrading 8 -> 11 is a lot harder than upgrading 11 -> 17 will be.