I personally like it, although it is good to check what the optimal place of the stations is. It should be both benefitial to the North of Germany and the North of the Netherlands, and connect as many people in that area. So maybe you'd need an additional station near Oldenberg or Bremen to not skip over too much of east Germany.

If you also place a High speed line south from Amsterdam-Essen-(further south like) and Essen-Hanover-Hamburg, you have most of that area covered.

But my guess is that they'd build an Amsterdam-Hanover-Berlin line, especially when they don't plan ahead.