I noticed recently that 5e doesn’t include an arcane half caster. Was this deliberate?

I noticed recently that 5e doesn’t include an arcane half caster. Was this deliberate? I’d like to know more about the design decision and if you see it as a niche to fill as the game grows or if you’d rather avoid it.

mikemearls24 points20 days ago
I think we have enough casters that we’re not necessarily seeking to fill that gap. The bard was probably the most likely candidate for that treatment, but worked out much better as a full caster. from discussion AMA: Mike Mearls, D&D Creative Director.