There are grass courts in Holland
A lot of players who come from "sunny" countries ( I don't want use the term claycourt specialists
) need some more time to adjust to grass since they don't play much on the surface. I wouldn't mind seeing more players do well on grass and seeing more exciting matches on the surface, but to achieve that, the grasscourt season needs to be longer. I don't mind it being one or two weeks longer.
Besides, a longer grass court season means Marat can win a Safin Slam without burning out