I already tried this one, it doesn't expand anything (Only tried imagefile1.pak). Did you use xtool.ini?
I used this:
packcmd = xtool.exe e
recomp:t4:v:c32:lz4 - - <stdin> <stdout>
By the way, note that you can find some of my repacks - Quantum Break (23.3 Gb) and outlast 2 (10.2Gb) on ygg if you are interested. You can erase this, I'm sure it's against the rules of the forum.