When saving an ID3v2 tag, a 2048 bytes padding is added to the tag, if not existent. I understand this is useful when tags may have future updates... but what if my tags won't be updated anymore? It's just wasting space.
So, as a suggestion, we could have an option to have zero padding with ID3v2 tags. With this option checked, we would have no padding added to new tags, and modified tags would have their padding trimmed to zero.