Voadam
Legend
Superhero fiction comes to mind as often having magic be distinct from other super powers.Pretending that psionics isn't magic isn't "rich and varied" it's just burying the lede. It's pretty much only D&D that tries to quantify different kinds of "magic" like this. Genre fiction generally doesn't. You just have "magic" and that's it.
Some like different mechanical implementations for their individual playstyle preferences.Pretending that you need fifteen different kinds of magic just to be "different" isn't really doing anything other than overly complicating things where there is zero need.
In 3.5 I thought the warlock from Complete Arcane was a great option for those who wanted to be a magical character without the resource management tracking of a Vancian wizard.
I was a big fan of the psionic focus mechanics in 3e and I know a lot of people liked having a spell point option that psionic classes provided instead of Vancian slot casting.
One of the strengths of 3e was the wide range of mechanical options to do things that could match different playstyle and mechanics preferences.