During the last Olympics did any country ask to work on increasing on their medal tally for the 2012 Olympics. In the last election did any party ask for votes in the election before. What you are asking here amounts to exactly the same thing.
As these are old buildings it's likely that any who have them are now a high level player, does somebody with 1/2 million or more storage see any point doing stuff to gain a few k more, will somebody with population measured in the 10's of K do the same to gain less than 100 more.