I was just thinking that having the integrated look would look better if
we
came to sell the house at some point in the future.

Probably when you move, just point out that you have the carcase and door
for an integrated appliance if the purchaser so desires to obtain one. I
doubt you'd make the money back actually fitting one, though, unless your
current new fridge is very old by then, but if you find an integrated
appliance enthusiast, they'll be happy knowing they can remove the white
lump for just the cost of the fridge.

Christian.