I've been on and off bcps for nearly four years now, and i've noticed quite a few nice effects. Apart from regularising my periods, they also sort out my acne, excess hair growth and reduce my mood swings

. However, i find that i can get some nasty headaches and nausea too

. It controls your hormones, so naturally it'll hide the symptoms of pcos. but that's all it does: hide them. When you stop they'll all come back with a vengence (i find).
I totally understand why you want to come off of the bcps, smoking or not. why load your body with hormonal chemicals that at best hide your symptoms, leaving them untreated, or at worst, exchanges them for other problems.
Thankfully my cysts have decreased significantly

, so my gyn has put me on a progesterone only pill for a few months until they're gone and referred me to an endocrinologist to take care of my long term hormonal imbalances.
Are you seeing an endo? the impression that i got from my gyn was that they might be less inclined to give the pill, but i don't know that for sure

. i would like to know more about other cysters' experience with endos, please.
I don't know if i've helped you, but imo if u aren't happy taking it, then it's time to find something else. Research alternatives (metformin, perhaps?) and ask your doc about them.