When it released I did not like Neverwinter Nights 2. It wasn’t what I wanted from a sequel and it was demanding and didn’t run well on my PC then. On Deck though I think it runs super well and I actually got much farther in it than I ever got in the past. I don’t know why it got delisted but it’s a shame.
As for games I wish I had on Steam but don’t, it’s Rocket League. I kick myself for not buying it when I could. Yes there are ways to get the other launchers going, and rather easily, but I prefer native steam games where possible (for max convenience) and there’s nothing else in the epic store to warrant the hassle of setting up heroic or whatever.