I think you agree that self-expression is intrinsically enjoyable. That includes game-making, cooking, and long conversations with friends where you really open up to them. If that's true, we can work with that.
Boredom is a choice; it is not an inescapable consequence of external factors, but a fully escapable consequence of internal ones. I get that a lot of people really like to proactively dismiss the idea that each of us are responsible for our feelings, but that doesn't challenge the fact that we are. As Louie C.K. says, the world is vast and each of us has explored basically zero percent of it; our minds are functionally infinite. While we can't always (maybe never) choose what comes to mind or what happens to us, we do get to choose how we react. These are foundational truths to humanity and I think dressing us up like we're helpless is nothing more than an actively harmful appeal to pathos.
Whether you agree with my definition of boredom or not, if your assertion is that, purely, we should remove "boredom" as a possible status effect in our "redesign", I'm down with that. But it's maybe unnecessary if we can just present the "users" with a lot to do and not a lot of busy work to get to the fun stuff.
If all basic needs were guaranteed to be met for all people (something that I think most of us here have put on the table for our "redesign") that doesn't necessarily result in a "world of lazy gluttons." Indeed, we have (I emphasize *few*) lazy gluttons now who 1. are NOT a majority and 2. do not necessarily have all of their needs easily met. In reality, most people have to work (very hard) to meet even a portion of their needs, most people have esoteric hobbies they enjoy, and virtually all people who partake in some form of free self-expression (art) report that it makes them happy.
If we take away the need to work, I assert that we won't negate the desire to work; certainly we won't negate the need for self-expression, or the desire for esoteric hobbies. Why? Because, right now, whether somebody works to sustain survival, or because they feel the work is a calling of some kind, or they find true joy in their career climb (the three ways people approach work, according to research), people will still follow the other avenues to enjoyment. In many of the proposed "redesigns" here, people can still work careers if they want to, but nobody has to work three fast-food less-than-minimum wage jobs in order to survive. (Unless they really enjoy that.)
Imagine a world where you were guaranteed shelter and healthy food and reliable healthcare even if you did NOTHING, then you could go about doing whatever you wanted: meeting people, exploring, studying and leaning about what others before you had discovered; more time to spend with family and friends, more time to spend on entertainment, art, sports, whatever.
If we can design life to facilitate this, why wouldn't we?