BKSK Architects proposed a 30-foot glass dome as part of an overhaul of 44 Union Square East.
The developer of 1 Vanderbilt Ave. revealed the design of the planned 1,300-foot tower.
The bookstore was set to close on West 57th Street Friday evening.
The newly appointed Community Board 5 members hope to increase park space in the area.
The historic 57th Street building housing the Rizzoli Bookstore is set to be demolished.
The board said the terrace would disrupt neighbors with loud noise.
Attendees of a packed public forum called for new zoning regulations and a moratorium on skyscrapers.
The new lanes will be linked with bike paths in Bushwick.
The Wednesday night panel will address infrastructure, landmarks and shadows cast by the giant towers.
Critics in the community were livid at hotel reps, who they said have a "horrendous track record."
Companies including Google made organizers sign non-disclosure agreements, angering the community board.
The proposal, which would allow bigger skyscrapers around Grand Central, now heads to City Planning.
Eight of 12 boards passed resolutions opposing the city's proposal to allow new, larger skyscrapers.
Christine Quinn had a key role in bringing about the likely limit on Madison Square Garden's new permit.
The boards' recommendation was the first step in a months-long review process for the proposal.
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