My main goal is to note deviate too much from the core. I don't want to reinvent the wheel and that may be too much change for me.
The reason I mentioned it is, in the other thread, I suggested similar, using class and background to determine the ability adjustments − rather than race. Someone else (@TheSword) pointed out, if that is the case, and every Wizard gets +1 Intelligence and there is no race adjustment, then why not just remove all ability score adjustments. So if using pointbuy, and most Orcs have high Strength, but your Orc has high Intelligence, ... done. There is no real need for classes or races to give an adjustment.