The original Dragonlance campaign setting book had separate classes for White, Red and Black wizards. These could be the wizard subclasses for this setting. I can't remember much else about the book.
I think we could get by with just a single subclass with sub-subclasses (like Land Druid). Even better, make Wizard of High Sorcery a feat--since you couldn't technically join until you had a few levels anyway. That way you can still pick a regular Arcane Tradition from the PHB, and just get some moon magic benefits from a feat.
Oh, and I forgot to mention Draconians. They are Dragonborn subraces according to the PHB.
Mul could be a subrace of dwarf.
Good call! The smaller the mechanical space used, the better IMO. (Ie, don't make a class when you can make a subclass, don't make a race when you can make a subrace--cause that's the 5e way.)
I would make Preserver and Defiler wizard subclasses (the only two available).
Could be done, but since Preservers basically functioned like standard wizards (in my recollection) while Defilers got a boost from being a Defiler, and since Preservers could become Defilers fairly easily, a feat seems the simplest way of handling it.
There would need to be four elemental subclasses for clerics (although there would be quite similar to existing subclasses).
Sub-subclasses, like Land Druid are all that's needed here. Four new subclasses is too much material.
I would take an idea from another thread and make Templars a warlock subclass.
Conceptually this might make sense, but mechanically they were always basically clerics. The mechanical stretch of going warlocks seems like a bigger issue than the fluff stretch of going clerics empowered by non-deities.
The Sorcerer could be made completely psionic (Pathfinder did it)
I think that would be ill-advised. Psionics isn't the same as spells, and messing with a class that much makes it not even the same class. I mean, unless you are just referring to a Psionic Sorcerous Origin, which still uses spells they are just Innate Magic (Psionics) like some monsters have. That's doable (though I still don't favor it).
and there should be psionic feats for everyone.
Absolutely!
Wild Talent as a minimum, and maybe a couple more. No feat chains though.
Warforged is important as a playable race.
Yep. I know there are some others too that Eberron needs, but I don't know enough to list them.
Wu-Jen is currently a subclass for UA Mystic (psionic class). I don't feel it belongs there though.
It doesn't look like that particular version was well-received, so I expect a high likelihood that it won't show up as a subclass in the finalized Mystic, hence I ignore it in favor of the correct Wizard identity.
Interesting that nobody has mentioned Birthright yet, which I'd say had some of the richest fluff of any 2e setting but would require some rebalancing for Wizards/Magicians and war magic. I'd publish the realm-management bit as a standalone boardgame and make the setting conversion available for free though.
I forgot Birthright! It is a cool setting.
Magicians could just be Lore Bards. (
Maybe a unique subclass, but I'm not sure it's needed.)
Most of the other stuff wouldn't require more than some feats, and perhaps a few subraces. As a design principles, fiddly stuff isn't carried over to 5e.
A realm management system should probably be independent of Blooded Scions and Regency (so it can be used in non-Birthright games), and the feats they take just allow them to be supernaturally better at it than regular people.