I do feel that the focus of airlines is on England because they have limited resources and Cardiff just isn't important to them because no doubt many of the English routes are more lucrative and the government will be more concerned about getting them reinstated than any route from Wales.
English routes? Government concerns? Think you're being a bit one-eyed here. All of the re-instated LM routes have involved Scottish or Irish airports except EXT-NCL and SOU-NCL, and the vast majority (all?) have been from existing bases. Eastern have launched SOU-MAN and SOU-NCL. Heaven forbid airlines concentrate on routes they regard as "more lucrative"!