Two problems with the approach, ELDEE cross at 8000ft and 210 knots, means that you have to slow and decend within 2000 feet and 12 miles after meeting the 10000 ft restriction at the previous fix. Considering that you may be well above 300kts+ at the previous fix. Good planning on the part of the PF helps here, but the potential for error is very insidious, especially for a person that only occasionally flies into DCA.