The interface really isn't that bad, it just needs to do way too many things for it to be anything but complicated. Not to rag on Eve (although it looks more boring than watching paint dry), but I doubt it has anywhere NEAR the complexity of X2.
It's great that you can fly around, switch ships, own ships, have them be your wingmen, own capital ships, dock smaller ships in it, have other smaller ships be wingmen to slightly less small ships, own fabs, own a ship to place your own fabs, own ships to ferry goods to and from fabs, own mines to supply your own fabs etc, but you're going to need to be able to control it all as well, while still retaining a full flight model.
Try doing that and still delivering a decent interface.
But, I can understand the complaint, X2 takes a LONG time to learn.
Creston