Um, what?
The people arguing that such a change would introduces power creep have no leg to stand on. You already get the full +6 stat power in your main destiny. So we already have the maximum power this suggestion would allow. The only impact is that it would lessen the power loss when farming fate points.
Also, the idea that magister shouldn't offer strength because it's a wizard destiny is laughable. You're aware that you can get strength from a wizard enhancement tree, right?