Never flown a 747 so not really sure what it can or cannot do at MTOW. To me it seems operators and procedure designers should sit down around a table and talk. I often get the impression procedure designers don't know what an aircraft is when they put a, seemingly, arbitrary "max 210 kts" 25 miles out on a SID over open water. Likewise I cannot understand operators/pilots so fixed on sticking to SOP that they can't flex an inch to comply with relatively mundane stuff.