The crowded and, well, blah plaza outside the Metropolitan Museum of Art is headed for a makeover, now that museum trustee and philanthropist David H. Koch has promised $60 million for the project. The Times has the details on the redo, which could begin this fall if various city departments give the thumbs-up. The plan from Philly-based firm OLIN involves smaller fountains?"programmed by computer to provide a variety of water patterns during the warm months"?which will become reflecting pools in winter. The revamped plaza will have double the current number of trees, including some topiaries; benches and retractable parasols; bronze kiosks for information and food; spots for street vendors; and night-time LED lighting. That all sounds fun, and the rendering above gives only a partial view.