TwoSix
Everyone's literal second-favorite poster
So, compared to baseline fighter, it loses heavy armor, second wind, action surge, indomitable, the ASIs at 6 and 10, and the 4th attack capstone. It gains a warlock patron (but no pact), invocations at a lesser progression, and pact magic at about half progression.
Seems pretty decently balanced to me, although I think I'd like it to lose the 3rd attack. It's more MAD that a straight fighter, doesn't get the extra ASIs, and a few extra spells per short rest isn't going to tip it too far in the other direction, even using hex. Might be a little strong with the hexblade patron from the UA, but that's UA material. Would be fun with EK for a nice mix of spells (and cantrips and War Magic). Plus, this class can actually find some use for the invocations that give spells once per long rest (since they give access to spells they normally wouldn't be able to cast).
Seems pretty decently balanced to me, although I think I'd like it to lose the 3rd attack. It's more MAD that a straight fighter, doesn't get the extra ASIs, and a few extra spells per short rest isn't going to tip it too far in the other direction, even using hex. Might be a little strong with the hexblade patron from the UA, but that's UA material. Would be fun with EK for a nice mix of spells (and cantrips and War Magic). Plus, this class can actually find some use for the invocations that give spells once per long rest (since they give access to spells they normally wouldn't be able to cast).