OP said:
2. Though there need to be rules to balance it, encourage players to create their own spells, magic items, craft their equipment, etc. I saw way more player-created spells in the 2e era than I ever saw in the 3e era.
I never really thought about it, but, I do think you're right. However, I think you ignore the reasons why. There's simply far and away more material available to a 3e gamer than a 2e gamer. Between WOTC and the third party publishers, there's easily several times more material on any given subject that a gamer could think of.
3000 plus feats at last count wasn't it?
But, I do agree with the idea. Rules for creating new stuff should be included. However, that idea only appeals to the tinkers in the hobby. There's a very large number of gamers who are perfectly content to just play and could care less about making new stuff. Making new stuff should be an option, perhaps even encouraged, but never, ever expected.
3. Teach people some damn role-playing. OK fine, so sure, if people don't want to get into that they don't have to, but increasingly the "examples of play" read a lot more like "I rolled 8, did I hit?" than "I hack furiously at the wererat!" I own something on the order of 1000 RPG products and there are many games that, just in their core rules, set a stage that promotes role-playing. Again, without that D&D is always going to lose out to some computer thing that can "automate" the rules.
Meh, while I'll agree that lots of games do this, D&D never has. Kill stuff and take its loot was the mantra thirty years ago and it hasn't changed all that much.
And, it has an advantage. All those games that try to push role play, like Vampire for example, turn off gamers who aren't interested in it. The role players will always role play, regardless. But, if I'm forced to role play, I'll find something else to do.
In my mind, a great thing to do would be to actually move that example of play from the DMG, where no one ever reads it, into the PHB where EVERYONE should read it. Why is the play example stuck in the backwaters of the DMG? It's ridiculous. The example of play should be in the first chapter of the PHB and should give about six different examples around the table.