Interesting, and well done on staying in control.
My own...
Incoming
Seiko MM300 SLAJ021J1
IWC Pilot's Chrono IW388103
Glashutte Original PanoInverse
Omega Planet Ocean 2209.50.00
Ulysses Nardin Executive Dual Time (see below)
Outgoing
Omega Speedmaster Pro
Ulysse Nardin Executive Dual Time
Overall movement
From 9 to 12
All of my incomings were long-term wants, so the increase in numbers was always planned and therefore not unwelcome. I won't be going above the current twelve now, though, so one in will also require one out; trouble is, I don't really have anything that I'd happily let go.