Purpose of this Rebol fork is to push the origial Carl's source to be usable at least like Rebol 2, but keep the source code clean and project easy to build.
I was quite a long time using official Rebol issues repository https://github.com/rebol/rebol-issues but because nobody really cares about official Rebol and this repository and I was not allowed even to tag my own issues, which I suppose to be fixed in my branch, I copied existing issues to my own repository, which is here: https://github.com/Oldes/Rebol-issues
You may want to check Ren-C, Red and Boron projects, if you are looking for other Rebol like languages.
There is also Shinxin's fork, which I was initially using for chery-picking, as it contains modifications from Atronix and Saphirion. But its use is now limited as it depends on non-public modules and also there is not much life visible recently.