As the title says, I suggest to remove the collision of most or all decoration based obstacles in a room.
Reason: When doing quick dashes to avoid enemy fire, it is very common to get stuck inside or between these obstacles. Reeling towards an enemy with a lure cane also have the same or even worse effect. I know I'm not the only one that encounters this problem as I see people complaining about it in #1019706815992303717 often.
If you guys decide not to add this, that's fine. But at least have a system that prevents the player from getting stuck.