I am bored with all the motorcycles too but now we are knocking it too 
much.

Characters are continuing to
develop. Belldandy is becoming much more accepting of her own jealousy. 
She is not the perfectionist she used to be. Her sisters are less and 
less able to protect her, and there seems to be less need.

Keiichi seems more comfortable with himself than he used to be, a bit
mellower perhaps.

Belldandy is becoming more her own person. Riding a motorcycle all by 
herself seems significant.

Multiple conflicts have been averted. Wars that don't happen never 
attract much notice but perhaps we need to be reminded that there are 
such things.

Skuld seems to be relinquishing her role as Belldandy's duenna. It looks 
more and more like Skuld and Urd are closer to each other than to Belldandy.

This series could go on for decades just slowly developing characters 
although I would not mind a bit more melodrama either.