That said, I'm wondering why there aren't any effort put in unifying and consolidating all a´kido styles. Or are there ?
I completely agree with Lynn's post above.
Regarding the quote. You only have to check out aikido on wikipedia to see how many aikido styles are listed, to realise that the chances of them being all unified are probably slim to impossible.
Who would or could even attempt it? ( answers on a postcard please
So I think Tom has it when he says:
Personaly I think it is our luxury to enjoy the differences.
I'd say just focus on enjoying what you do, wherever, whatever style you practice. Aikido will take care of itself.