Those are some intriguing ideas for enhancing Kiba's abilities! The addition of a lightning style to his Fang over Fang jutsus could definitely make them even more formidable, with the potential for an area-of-effect lightning strike upon impact. The hound summoning ability would be a unique and exciting addition, offering the opportunity for Kiba to combine his skills with another dog for creative combos. Exploring sound-based jutsus, incorporating barks and howls, could provide a thematic connection to Akamaru and unleash powerful sound waves through synchronized howling. Unlocking up to 2 inner gates would take Kiba's physical abilities to a whole new level, adding an extra layer of intensity to his battles. I'd love to hear your thoughts on these ideas or if you have any other suggestions to further enhance Kiba's abilities!