That crossed my mind, seems a little unnecessary to have the access panel smaller than the fuse box!All designed to get you back in the dealers workshop methinks.
I've also learned it's a good idea to put something under the fuse box as the floor liner ends so when the fuse you can't hold properly pops out it disappears nearly out of reach under the flooring!
I can't believe how long it took to perform a very simple task with this van!