Astonishingly a lot of people care about HC. Just because you don't like it, doesn't mean you speak for the community. Yes, its true, hardcore takes less bullets, and it takes away your precious mini map. To me it is more intense and fun to play. If you don't like it then don't play it. Your Welcome.
Who cares about LeaguePlay? There are only about 2-3k players playing out of 600,000 in league. What does that tell you? Surely not that its popular. Why is it such a big deal if there are only limited HC modes? The most fun ones IMO are in there, others like your precious HC Chaos or Party games are on the very bottom of my list. So in my opinion, no one gives a f**k aobut Core.
And by giving us your gamertag, I get to laugh at your stats.
1.35 k/d (pretty bad)
.47 w/l ratio (terrible)
and with your main game mode as domiation, you are not a strong player.