I'll have to have a look at G Plates - looks like a great tool. As for the dark path - the force is strong down that way and I assure you there's light at the end
There are great tectonically-aware maps popping up in the guild - groovey's, akubra's, yours.
Now, as for your changes:
- the divergent boundaries are better placed, but you have to consider the same reasoning when placing the subduction between the two oceanic plates that are converging. The one that is "sinking" should be disappearing, hence, should be narrower. Also, keep in mind that oldest oceanic crust goes under, younger stays atop.
- it isn't necessary to continue that divergent line into the continent, you can consider that the continental plate moving southwards is "covering" that magma source - but you can continue it if you like, that sort-of-peninsula could pass for a breakaway "craton".
- zone A still doesn't convince me.
- for zone C (and overall, for the plate over the south pole) I really recommend that you make a stereographic projection of the zone and try groovey's technique of having a semi-transparent layer on top of it rotating. Plate movement close to the poles is hard to visualize.
- mini-continent E should be as far from the divergent line as much as the large continent to the west, assuming that is a breakaway plate. On its east boundary, however, there's no reason to have such a wide front of oceanic crust. Either you make the east boundary close to the land mass or you keep it where it is and you add a big underwater continental area, with a mature island-arc at its limit.
Overall, ascarius, great improvements, but I wonder how it will look if you use g plates. kudos for finding that gem!