I think there is a maximum number of pens I can keep in rotation. For me is it around five. Because there is only so many pens you can write with regularly before you have to spend a lot of time making sure they don't dry up.
When I got my Metal Falcon I decided to empty, clean and stop having my two Pilot Metropolitans as a part of my daily carry. This is kind of weird, because up to this point all of the pens I enjoy using have been a part of my rotation. But the truth is that I enjoy all the other pens in my rotation a lot more. And seven pens is a little bit too much.