>>3557792Yes.
The Canon 6D classic will be a noticeable improvement. Either stick with the 50mm STM or the 35mm IS USM then. If you don't upgrade to a good 24-70mm, you should just stick to primes or going back to APSC.
Best thing about the 6D is its central focus point. Allegedly better than the MkIII in low-light.
20mpx is a sweet-spot between file size and picture details.