Sounds good, considering how much I liked the Noble. Some possibilities:
1) Another class with Pact Magic, but not a direct clone of the Warlock chassis. (Doesn't have to have Pact Boons AND pacts, for example.) Maybe a Shaman?
2) A trickster class with magical class features but not actual spells. Maybe one subclass with an illusion focus, another with mind control. Something like the 3.5 beguiler, but not actually a spell-user.
3) An elemental blaster class, sort of like a 5e version of the Pathfinder Kineticist. Definitely an overlooked niche in standard D&D that's also wildly popular, based on the Paizo forums.