I know we've talked about this. It's just bizarre because he's literally turned into a bat twice in canon and referenced his ability to do so with Deadpool (Ewing also acknowledged that he wanted to do something with that in Mighty Avengers before writing on panel that Blade can't do it in Hulk).
Beyond our personal opinions, Blade's stated power set (all vampire strengths, none of their weaknesses) has been interpreted in so many different ways at this point. We have writers like Aaron who literally just write him as a vampire who's immune to sunlight, then others who take the movie route and write him as a more muted vampire with just strength, speed, and a bit of healing (even the healing varies depends on how vampiric they want to make him).