Would it be possible for ISP's to operate a proxy seed box (or network of boxes), that detects which torrents are popular, and and seeds them to customers? In

Would it be possible for ISP's to operate a proxy seed box (or network of boxes), that detects which torrents are popular, and and seeds them to customers? In theory these boxes, being much closer to the customer and having less bandwidth bottlenecks, would be the preferred source for bittorent clients.