Well,

We wouldnt pwipe persay. I don't think anyone wants that. More a conversion of old point to equivelent level new points

Your suggestion to test it would be the easiest way. But there are balance checks and such that would have to happen as well. Plus the whole multiplier part so that your cost changes based on what you already know. (so studying a single branch remains easier than multiple branches)

Also the question comes up is it just one pool of devs? Or do you keep seperate CMS