I agree with much of what you say. I also like your username. A few points you may or may not disagree with.

1. Inasmuch as you consider it a walled garden, they employ thousands of local residents, and that count goes to tens of thousands if you count subcontractor and Yale related economic activities. Both directly and via subcontractors, construction jobs, vast medical system, and more.

2. You have to consider whether Yale occupies spaces and economic opportunity that would otherwise flourish in its absence or whether whatever economic activity is there due to in large part Yales presence.

3. Regarding Yale's lack of community presence. Is that Yales fault, or the fault of the area lack of opportunity presented to Yales gifted and high achieving alumni. This particular complaint smells of idealistic wishful thinking that isn't grounded in any reality or economic realities.

4. Do you think if offered to host Yale, Bridgeport wouldn't offer tax free accommodations and more? Put another way, look not 15 miles west to Bridgeport, and their crumbling, vacant, shuttered, ruined, downtown. Do you think New Haven would have fared differently? Look at Hartford, Waterbury, Meriden, Derby, can go on. These towns went one way, save for one.

5. I'd be curious what specific actual policies you would support from the municipality imposing on Yale or vice versa to help any of these issues.