Before messing with the image I thought it could be an acceptable replacement/compromise, but after seeing it I agree that having a sign that size with a Sox logo would be ridiculous, which at least to me draws attention to the absurdity of having a sign that size with the Citgo logo. I think this is a case of "it's always been there and I'm used to it."
I remember moving the Boston and having the sign explained to me and then later explaining it to people on their first visits. I'd wager a number of people here can recall similar experiences. It borders on collective insanity, but I guess that's not much different than shared nostalgia.
If it were up to me I'd just take the thing down. Either that or treat it like the Greenway murals.
I know we've discussed this many times and this isn't the right thread for it. Sorry to derail. Feel free to move the post or delete it.