so here it is, Radious compatible version with sacking enabled and the ai not using it!
migrators like alans and visigoth settled down after 3-5 rounds in my wre test games
u can even activate raze for everyone as the ai will firstly recolonize burned down settlements, then do anything else, it's great how they actively colonize across the map, faster then u can look 
hope u can use and download the file, otherwise i will upload it on another server or give u purely modified of ur own file, as this is a stronger modified version of ur own file
i'm playing with bacai, radious and a tuskmod version, all modified
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