I get that the current building is in a sad state of affairs so the numbers to maintain in probably don't make sense anymore, but it would be easier to swallow if there was some incentive or desire to rebuild buildings in the same format or aesthetic as the doomed heritage buildings. You see buildings in Europe that were bombarded during war, rebuilt in the same style, and people can't even tell the difference. Do that!
I feel like there's a pretty obvious formula to what makes these historical neighborhoods so likeable and charming...so even if it's just something simple as the mandating/incentivizing the use of brick and stone on the facades of buildings along 9th ave, it would help maintain the atmosphere. The Merlin Block in Inglewood is a decent attempt at this. While a new-ish building (2003) and not a rebuild, they designed the facade to fit into the historical aesthetic of the neighborhood. It's not quite to the same level of craft as before, and yes, it's historicist and "fake"...but it works.