I don't think that's a good idea.
You're right about the fact that tournaments is done from the belgium daisy but don't forget BGA is mainstream. A lot of players, beginners, wanna learn new games including "Abalone", so we need to keep the original format from the official rules. That seems logicial to let this starting position and to purpose advanced modes in options, as "Quarto" for example.
That's simple to change the option if you wanna play with belgian daisy.