Well, I could start making new textures for everything, but considering the standards I like to maintain for even just recolors, frankly, I don't have the patience for that right now. I, and Necroptos too probably, just wanted to bring some of the jankier textures from bob's at least line with vanilla. Rocket sprites are up next.
As for reusing shinybob's textures, that's not a terrible idea since it IS MIT, but it'd be up to Necriptos, since he makes all the stuff work in mod form.