Bulblins would be a welcomed return for me. I'd like to see them make more appearances, and see more of their ranks and higherups - possibly not even in service of Calamity Ganon, but just as random thieves and ne'er do wells. It would definitely be an awesome call back to see a sort of western civilization overrun by Bulblins that we need to clear out. Also, I think Bulblins could easily fit in with the Breath of the Wild aesthetics (assuming that's what you were referring to
@Lozjam) due to the Bulblin's - and, to a lesser extent, Bulbos - in Spirit Tracks, where they both appear in a more cartoony style, with Bulbos becoming hairier and less threatening in their appearance.
Of course, they would need to be remodeled and upscaled tremendously to better fit in Breath of the Wild's world, but I could see a return similar to this entirely possible, especially considering Bulblins actually have a well known mount (Bulbos) that they can ride, while the Bokoblins have to ride less interesting creatures like horses.