On a mechanical level IEC connections suck. For manufacturers they are great, cheap and "universal", but, for the user they cause nothing but trouble as, mechanically, they are garbage. You pay $1000+ for a power cord and are reduced to using cable ties to keep your gear plugged in. Now that is sad.
Why not use twist lock connectors? They have been used in hospitals, industrial, military, and the electronics industries for years. They use a positive lock, have a huge contact area, and most are self cleaning. The only down size is that the equipment recepticles can be rather large. But,lets face it; on most pieces of gear that is unimportant (further, compact sized units are available).
Compare a NEMA L-5 connector (15-30A 125v) to an IEC. Its like a MB 420 versus a Yugo.
When are we going to start demanding connectors that works?