Resolve problems with AoG plotting frontend

[SamuelBrand1]

          Bit of a shame to move away for AoG but looks good.

Originally posted by @seabbs in #555 (review)

This is a meta-issue to track problems I've had with AlgebraOfGraphics.

Broadly, I can get the quality I'm looking for by lowering down to using Makie imperatively. However, there are good reasons to favour declarative plotting, therefore, as a nice-to-have I'd like to devote some effort to resolving AoG problems (which might be as simple as my understanding).

[SamuelBrand1]

cf #376