Flight and Enemy Projectile options For the next update

I want to make my mod have a powerful boss that can fly, and shoot projectiles. But unfortunately as of this update there is no option for a flying mob, and the projectiles are basically retextured arrows. I think for the next update you should add an option to make a mob fly, and a flight pattern type, (like a ghast, wither, etc options). And for the projectile keep the part where you choose textures, but add more options to it, options like exploding, the amount it fires at a time, and maybe even an effect.