In the revised plan for the site along Lake Michigan and the Chicago River, Related Midwest proposes towers rising 875 and 765 feet, with 1,100 combined apartments. Those heights were chopped from a previously proposed 1,100 and 850 feet, which caused some at Tuesday’s meeting to wonder aloud if the new plan is spectacular enough, considering a previous developer once envisioned the tallest skyscraper in the Western Hemisphere.