I am going to leave out new classes that I would like to see and ignore that I want all classes to have thier subclass at first level.
Barbarian:
Subclasses: Berserker and, maybe add Zealot
Personally, as a DM and player, I don't like the other subclasses either mechanically and/or concepually. So, I am willing to sacrifice them so that other classes can have more subclasses.
Bard
Subclasses: Lore, Valor, add: Glamour.
Personally, I would also like to see
- a first level Martial variant that allows the bard to begin with the Valor bard's armor and weapons (with tradeoff(s). This would address an issue Mike Mearls discussed in his Happy Hour about classes should not suddenly play different when you gain your subclass.
Cleric
Subclasses: add Grave or Order to the list in the PHB (I lean to toward the former)
Personally, I think the class also needs further design changes
- Choose an Order: At first level, add an additional class choice similar to the Warlock's Pact Choice of Blade, Chain, or Tome. The order determines the focus of the priesthood. Choices for Order might be
- Cloistered (Scholar- simple weapons, robed bonus),
- Itinerant/Mendicant (Travelling Priests- light armor, simple weapons),
- Templar (Warrior Priests- medium or heavy armor, martial weapons).
- Bonus Armor and Weapon Proficiency (and the alternative class features for these), Divine Strike, Potent Spellcasting would be moved from domain to order although specific skills or spells would be based on the domain. . At the DM's option, he or she may choose set the order choice for specific deities based upon the setting.
- using Adept Background variants at first level to further customize domains and priesthoods similar to that done by Jame Driscoll in his 2e Complete Priest's Handbook conversion (on ENWorld forums).
- More tailoring of spell list choices based upon a cleric's domain spells, a small shared list of spells for all Clerics (e.g. spells like Bless, Remove Curse, Commune, Planar Ally (tailored to domain/deity)), and, possibly, another small list of shared spells based on alignment.
Druid
Subclasses: Land, Moon. no additions
Note: I am not including Shepherd, because, in my opinion, it does a poor job of being a "shaman". Second, I do not like how the spirits were implemented. In some cultures, Bear is associated with healing as are other animals (e.g. Snake). Third, i want it to cover a choice of ancestral spirit, land/elemenal spirit, or totem spirit rather than just totem.
Fighter
subclasses: Battlemaster, Champion. I might be open to including Samurai if they rename it
I'd also like to see them add a Light Armor variant at first level similar to the one Khaalis did and add many of the same subclasses that he did. . The Light armored fighter is an archetype that falls between fighter and the rogue. They are first and foremost fighters with maneuvers, but due to culture, time period, or training lack training in heavy and medium armor. Some may have "roguey" skills or traits as a result off their background, but their martial skill and maneuvers are first and forefront. Why a variant? Because not all DMs allow mult-classing (which I see as unnecessary hoop-jumping for a common archetype) and/or feats.
Monk
Subclasses: None. Currently, I don't like how all archetypes with unarmed fighting and mystical abillties get lumped under Monk which carries to much baggage in the class abilities. I want the class rewritten as a more general unarmed martial artist class with Monk as a subclass or the class split into two classes. I am also not a fan of how many of the subclasses and lack of customization for unarmed fighting styles.
Paladin:
Subclasses: Oath of Devotion, Oath of Ancients, Oath of Vengeance; add: Oath of the Crown
I would also like a spell-less variant at first level based off off the Crusader variant from 3e Complete Champion
Ranger:
Subclasses: Beastmaster, Hunter. add: none
I would also like to see:
- a non-mystical/non-spellcasting variant at first level based off off the Champion of the Wilderness variant from 3e Complete Champion.
- an urban terrain option and some options to support it
- an urban ranger archetype (since it was in 3e) and not inspired by Batman
Rogue:
Subclasses: Thief, Assassin, Arcane Trickster, Scout.
I would also like to see the following
- 1st level variants: Scholar Rogue, WIlderness Rogue that swap out certain skills and provide alternate equipment
- 1st level optional choices for players to replace Thieves' Cant (e.g. Trail Signs & Signals for Wilderness Rogues & Scouts, an additonal language for Academic Rogues).
Sorcerer:
Subclasses: Draconic
Originally, I included Storm, because it was a cool idea for a subclass and could fit the idea of a child of a storm deity. However, I am not a fan of the implementation and, therefore removed it (I did not include the Divine Soul for the same reason- poor implementation, imo, for what was a good idea for a subclass).
What I really want to see are official originsArcane Bloodline, Fey Heritage Origin (and even Abyssal Fiend and Infernal Fiend ), I would choose them over Storm depending upon how I liked the implementation.
Warlock
Subclasses: Archfey, Great Old One, The Fiend. No additions as i don't like the concept and/or implementation of the other subclasses.
Wizard
No suggestions for additions.
Evoker, Abjurer and Transmuter can just be taken up by the War Magic subclass, the Enchanter can be replaced by the Glamour Bard and the Necromancer would need better spells and a redo anyway. That leaves you with Illusionist and Diviner, add War Magic, Scribe and Blade Singer so you're down from 8 to 5, that's 3 more slots for the classes with only 2 subclasses in the PHB. 
