I liked the hardcore events, I played most including the repeats (both to get the first two seasons I failed before I learned to make my add issues work in a hardcore setting, then to help friends who failed the other seasons or returned even after I'd already gotten the rewards). It was fun, and it is a lovely little bit of nostalgia from when I started first playing ddo in 2009 when no one has anything and everyone is willing to help out for common survival and goals, and meeting new random people and having interesting conversations. It's a fun moment.
That being said, it's never going to overtake the joy of toons I worked on, and long term friendships I have made. There are friends who have been here for me on my private teamspeak server that i made in the guild who went beyond the game when my life fell apart, and that is irreplaceable. No nostalgia event can ever beat that. if there is never another hardcore, despite it having been fun, I really won't care. I think the reason I'm still playing this game so long is the people, not any playstyle or event.