Sounds like a good idea, and sounds a lot more than Castle "just bug-fixing the Iyonix". If they are actively seeking users opinions, then it sounds like they are really developing the OS.
It is odd to have the OS going in different directions, and different companies developing each side. Of course the people to make the comments about the split to are Castle, and they are now asking for consultation with their users. Perhaps a chance to raise these concerns.