Regarding the OP, I play a LOT of games, for a ridiculous number of hours. Wargame: Red Dragon is probably my fave atm and has been for some time (up to about 900 hours played on that one), but over Christmas I've been playing Verdun, Helldivers, Elite Dangerous, Europa Universalis 4, Street Fighter 4, lots of stuff. I would say I'm pretty good at most of those games, so... hardcore? Sounds a bit pretentious but if anybody is I am.
I have tried MMORPGs, including Eve, and have never been able to stand them. I think WoW lasted the longest in that I levelled up a bunch of characters to the level cap, but raiding had 0 appeal so that was that. Elite is the only one I've played for a much longer time, but then its not an MMORPG. It might well be an MMO. It not being an MMORPG is fine. I think the OP is a bit pretentious if he splits gaming into MMORPGs and Dads Games. Lots of people have zero interest in MMO mechanics. I would probably stop playing Elite if the notion of player owned space came up.
For what it's worth I only ever play in Open mode. Seeing the odd commander bumming around doing similar things to me is interaction enough as far as I'm concerned.