Some facts seem to have been lost in this discussion that had been covered before in previous threads.
The new trucks are EASILY converted to Kadees. No "cutting away" required. They even come with the plastic spacers and self-tapping screws to put the Kadees at the right height.
I understand that people who do not use Kadees positively hate these new trucks.
But, for those of us who do, they are a leap forward. One thought occasionally expressed is that putting Kadees on a piece could lower its resale value as claw users are not going to buy it. Well, the new design also allows one to easily revert back to claws. All that is needed is a screwdriver to put the claw back on.
Those who have no interest in Kadees simply because putting them on is a hassle can now try them EASILY and without fear of doing anything irreversible as the process is now readily reversed. All done with a screwdriver alone! No need for a Dremel. No need for a hacksaw or gorilla pliers to cut the claws off. No drilling or tapping. You don't even need a height gauge.
And remember that Kadees will mix pretty well with claws as long as the newer ones with the concealed springs are not used.
Those who just will not try Kadees for whatever reason, will not be won over. But if you have hesitated because Kadees seemed like a lot of trouble, the new trucks make it ridiculously easy!
While it is true that the springs are now decorative only, only the bolsters are plastic. At least the 21 PS-1 cars I bought have metal side frames. I am mystified at the "they're made of plastic" assertion? And, truth be told, the bolsters seem pretty robust. I had to do some serious scratching to confirm they are plastic. And, c'mon now, those "functional springs" never really did serve any real function!
Oh, and the rolling resistance of these new trucks is phenomenally low!