Looks great overall! I'm assuming that tectonically complex bit around the equator will turn into an Indonesia-style archipelago of microcontinents, yes? I've also struggled with random oceanic subduction zones going off the edge of continents in my own world, and it can be frustrating, but I think what you have there is fine. Perhaps an Alaska-style peninsula on the northwest of that western continent would help it look a bit less incongruous? Otherwise hard to say without seeing the GPlates animation.