FlyingChihuahua
Hero
Well that's just flat out the wrong approach.
You're basically saying "If you can't make you character concept, you're character concept's wrong." Rather than "If you can't make your character concept, there's an unexplored niche a class could fill."
I'm just trying to limit class bloat here. 5E hasn't had any official additional classes added yet for a very good reason.
People need to find more ways to pare down their ideas to subclasses and not just throwing up their hands and saying "This won't work, make a new class!"