If you look at the library from Google maps, or just walk around it, you can see that there is a lot of land around the original building. They could build a substantial multi-story structure around the current library after removing the Taco Bell addition. There would be no intrusion of any kind onto any street. If someone would just stop the current process from continuing, this type of solution would be considered.

However, the recently announced nuptials would have to be canceled, and we don't know what a pent-up rage might be expelled from the hot and frustrated old man Carnegie library. Especially now when the seductive so close and yet so far park is preparing to flash her dogwoods at him. He might blow up and take the whole fiction section with him.

The original Coffin deed is for a lot 100 x 150. From the street to the front door or porches of a lot of houses in the older parts of the borough you've got maybe 10 feet. 90 by 130 is 11700. A 3 story structure on that base gives you 35000 square feet. Foggedibout the coffeeshop and bookstore, add a ground level parking garage. Put a public garden green roof on top of thing. Look somewhere else for architectural advise and seek maybe three final designs.
Save the Carnegie building? We know from our leaders that the Carnegie building and Reeves park wanna screw each other. We don't quite know the male role/female role in these upcoming nuptials. I'd vote for green building mirroring the Park. To honor Reeves whose bridge and steel businesses were crushed by Carnegie, I say give the classic dominant male role to Reeves and have the park extend toward and screw the library building rather than vice versa. Is there a marriage manual for this thing? Thanks to the anti-Obama movement - we know what "tea-baggin" means in gay slang. In these upcoming Carnival - I mean carnal - acts, I say zone in "tea-baggin" as permissible, but no coffee-shoppin.