I would like to see a Warlord class, as I liked it in 4th edition...it felt fresh and new. I know that there are 5th edition Warlords out there, and I have only skimmed them, but maybe you all could tell me what you think of this idea: A warlord as a fighter subclass where there are various tactical and warlord-appropriate subclass abilities, something akin to Battlemaster and Cavalier as some have said, but more unique and appropriate to a warlord subclass. Yet, this subclass would have the following addition: The warlord subclass could share its Second Wind, Action Surge, Extra Attack, and Indomitable fighter features with a selected ally or allies within a set range. In the case of Second Wind, Action Surge, and Indomitable Wind, because the way the features are written, these could only be shared with a single ally per round (e.g. A 17th-level fighter who has two action surges could give an action surge to one ally, perhaps a wizard, in one round and the following round could use it him or herself, could share it with the wizard again, or share it with a different ally); yet the Extra Attack feature could be divided among different allies each round. So, an 11th-level fighter warlord who gets 3 attacks/round might forgo an attack action one round and give all three extra attacks to a single character. The next round, the fighter warlord might use one attack and give the remaining 2 attacks to two different allies, the next round, the fighter warlord might forgo an attack and spread the 3 attacks to 3 different allies, the next round the fighter warlord might use all 3 attacks him or herself.
I thought that might be a cool and elegant way to use the existing fighter class but do so in an interesting way that really enhance one's allies. I like the idea of the fighter warlord (who has reached 5th level when the fighter gets Extra Attack) distributing extra attacks as he or she directs his comrades using superior tactical knowledge and experience. Also, it would feel way different from the cleric.