You mean like how popular the Dev's were convinced Diadem and it's last minute update at the end of HW would be? Or the huge nerfs and buffs to classes for no discernible reason? Because let me tell you while SCH needed a nerf coming into SB it was nerfed so hard that /solo/ content was a challenge and dungeons were /PAINFUL/ given the underwhelming nature of the skills we were given pre-buff. What does all this have to do with Castrum and Prae? The simple fact that the developers aren't all knowing. Especially Developers who often solely take queues from the Japanese player base instead of finding compromises that work for /all/ their players. They've missed the mark countless times /because/ they are human and it's our job as players to speak out when we feel something won't work.
I ran Prae and Castrum back when they were off-content and before the roulette was introduced. I had to beg my FC to help me get into those instances at the fifty minute mark because no one was queuing for them due to lack luster rewards. Then we were given the roulette and frankly in /all/ my time running them I have not once had a newbie speak up about wanting to watch the cutscenes. Not a single time. I've had some stay back because they might want to, but not one time have I seen people be trolled or ask people to slow down. Overall to me this issue is overblown and /will/ cause issues for newbies once most of the player base cottons onto the new restrictions. Because when everyone I've told about the change immediately goes 'never running that again' there's going to be a problem.