IDK, maybe by 6e, but definitely not for the 2024 5e revision!Personally I thought the 4e warlord was great and would love to see a halfway faithful implementation of it in 6e, but I doubt it will happen.
I do like this general idea.I'd mix the classic features of the Warlord with the rather bland fighter chassis, giving us a real master of combat, being the class to pick to be the best at fighting and making your group fight.
For starter I'd go with:
Put the support features of the Banneret and the improved help features of the Expert sidekick. (maybe to replace the bonus feats with actual features).
Is the psion not just very obviously a Mage?Yeah I've got no clue which class group I think it should go into. Both expert and warrior seem to make some sense.
Still easier to classify than the psion/mystic though...
All three mages use the arcane power source from what we know. Psion wouldn't.Is the psion not just very obviously a Mage?
Like, they’re a Jedi consular. All force powers all the time.
That’s a mage.
Yeah the lazylord end of the spectrum isn't covered in 5e.It should be a full class with subclasses that enable multiple warlord playstyles, including those not achievable by the battlemaster, such as the lazylord.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.