I used to be Ovid.
My impression from those quotes is that Slaanesh is less the god of excess than of hunger: no matter how much of X a Slaaneshi wants, shem always wants more.
Oh, absolutely! And as a result they're all interdependent on each other in ways that you know just irks them.Well there's arguably some overlap between the different Chaos Gods particularly between Slaanesh and Tzeentch. None of them are really the sort to stay tucked away in one little bailiwick.
Well, in the original descriptions of that journey, each of those sections the knight/Grey Knight passes through is basically a lie designed to entrap you for eternity. The restful beach isn't actually covered with sand, it's covered with the bone dust of people who decided to rest there and never woke again. Those frolicking, sexy maidens are actually Daemonettes waiting to tear into you. That description of Slaanesh's realm really does sound like Dante's vision of Hell, with people being tormented forever by their greatest desires (although Tzeentch's Crystal Labyrinth isn't much better at all, being as its designed to drive you insane and torture you with your hopes and dreams).@CrazyIvan 's descripton of the gardens of Slaanesh (i.e.: their Godrealm). Do you think anyone living inside those realms is unhappy? Or in danger of really suffering negative consequences they don't want? If any part of living in those realms was undesireable? That would be anathema to Slaanesh! As the numerous reals each with wildly different desires being catered for shows there isn't just one way that Slaanesh fulfills you.