We have a proper glovebox, a footwell locker, a transmission tunnel map pocket, trinket box between seats, electrical spares in the engine bay fusebox, very useful door pockets, stuff under the seats, space behind the seats, large(ish) parcel shelf, alloy tool tray stuffed full of tools & spares, and that's all before Mrs M fills the luggage rack
A lot of the above simply isn't possible with a CX
I totally agree. We were looking seriously at buying a Plus Four but the principal reason for not doing so was the lack of storage space inside. It was a tough decision as I loved the drive of the CX.