Is it perhaps an idea to cut off the long straight branch, growing to the left on your last photograph off the frontbranch and wire the curved part a little down?
I have certainly considered it so I consulted the bonsai-teacher that visits our club at club meetings.
He said "It's an apple, they grow like that" meaning that I shouldn't worry about it and respect the nature of the tree.
I'm not too sure if I agree. I think doing what you propose could make it look better.
However, the most important lesson I have learned over the years: you can always do that later. There's no rush.
It's easy to cut off a branch, but you can do that only once. It's much harder to grow one back.
So... I'll prune the long branches to make the tree more compact, then I'll leave it alone again.
Next year I'll reconsider.