This is an interesting story. Seeing how these characters interact and get along is really fun. However, I hope the author stops portraying Harry as the goofy older brother, living in the shadow of his super-special younger sibling. That kind of approach is dull. It would be much more interesting if each brother had their own strengths and weaknesses, complementing each other.
After all, at the end of the story, what defeated young Tom was Lily's love. It would be fascinating to see that love represented again through the twins, rather than a conclusion where absolute power is the only deciding factor. Of course, this is just my opinion, but this approach would certainly make the story far more engaging.