It would be really nice to have an ascension upgrade (or divinity one both work) where you can slay ghostly beings (aka: flying units which can only be hurt with bow usually) with your sword.
I mean it's nothing major considering that at some point you can just fill the screen with arrows using parallel shots but it would be nice since it would help with farming kills with dash/boost. I always thought it was such a waste that i couldn't interact with theses flying bags of souls when farming theses quests.