I believe the str difficulty balance is right for the crossbows, but it comes very late so a lot of people will be hurt by it.
Also, apart from crossbows and flamberge/great maul, most weapons are untouched (even some armors could be debatedly up scaled). But the same str difficulty re-balance needs to be applied and scaled to all weapons classes, or its just a nerf-class stop-gap measure.
I know this is a lot of work, but whether or not you intend to do all this, I think free re-spec after all the weapon balance you want to do is done, is called for.