Low expectations are necessary for Y...
Compared to what else exists, and bearing in mind the generally reasonable price charged for it, I think KLM Y is a reasonably good product. Particularly when compared with their own ES! The all-day deli food in Y is much better than the non-service provided by US carriers on domestic. The coffee is better too, although I don't know if it's DE. However, I might not think Y was so reasonable if I were a FB PE member only accruing 25% mileage on KL V-class tickets or none on N-class, or whatever scheme they now have which is worse than CO's.
The big beef I have is with the inability to perform advance seat selection intra-Europe, and to some degree the need to call for seat assignments on intercontinental service. I don't want to be cast into the pit, like 42 E on the 763, with no say in the matter. Even CO, after their brief summer website and policy meltdown, have restored advance exit row seat selection for WP PE in Y. A good Y seat turns an intolerable experience into something bearable.
This brings up another subject that needs its own thread...
RTS