Hi there Lidge!
I can answer some on your questions on long-term BCP use and my experience with peri/meno symptoms.
I've been on bcps since 20; I'm now 52, so thats 32 years. Most of that time its been a low dose bcp (35mg estrogen steady all month, with progesterone progressively going up).
Peri: At around 37 I began having very sporadic, mildly moist night sweats & mild digestive problems
At around 40, night sweats became cyclical and more frequent. I would awaken with wet clothing, which I had to change to dry clothing. (Not so bad that sheets were wet.)
At around 40 I began having pre and post period migraines that were lessened with asprin, but not stopped.
At 45 I began having serious insomnia, requiring melatonin or valarian root nightly.
At 47, I began having terrible flatulence, and frequent digestive problems; pronounced ringing in ears.
At 48, had my first UTI in my life time; raising heart periods.
At 50, my joints began to ache constantly, my muscles became smooth despite hard heavy weight workouts; my weight began to creep up a few pounds; intestinal bloat became more common; urge incontinence became a HUGE problem; lost my libido, severe dry eye.
At 51, More joint pain, overwheming fatigue, suicidal depression, major intestinal disruption (diarrhea, intestinal cramping, bloating, food allergies galore, dry vagina, mild hair thinning. (Went of the pill for 2 months and experienced 2 mild warm flushes...got back on pill PRONTO!
Now 52, Gyno says I should come off bcp and go to HRT. My symptoms continue same as age 51.
So you see, Lidge, I didn't avoid all peri/meno symptoms just by being on lo-dose bcp pill. I admit that I have had no hot flashes, though. Maybe the avoidance of hot flashes is what they mean by smooth transition.
The reason I think I have peri/meno problems even though I've been on the pill is because [from what I've read/research] the bcp is administered at a high enough dosage to REPRESS the body's production of estrogen/progesterone so that the body thinks it is pregnant. This dosage is usually 3 (or more) times stronger than what is need/used in hormone supplementation, after the body moves into peri/meno. So, even though I am on a steady of dose of bcp hormones, my own hormonal levels are rising and falling and that is affecting the amount of hormones in my body at any given time. Confused yet?
In other words, my base line level of hormones is changing (as my symptoms indicate). So the added hormones I'm taking in from the bcps will be erratic too. In 20s and early 30s my hormones were steady, so the bcp's affect was steady. Now, I am low in progesterone and using Pro-gest with some minor relief.
I am also exhibiting physical symptoms of low estrogen. You would think that a steady of dose of hormones from bcps would keep everything steady, but I believe that my problem is HORMONAL BALANCE, or the LAC of it. What I'm saying is, EVEN ON THE PILL, you can experience being estrogen dominant.
I believe I am estrogen dominant and that is why the pill is not able to control my many symptoms. That's why I've come to believe that I should go on bioidenticals and get off the pill. Just getting a steady dose of hormones from the pill will not balance out your hormones if one is dominant and the other is completely depleted (progesterone).
My MAJOR frustration right now is that there is little information for women who have beenon the pill for their entire adulthood. We don't know whether to treat our symptoms as women who are in peri-meno or full meno. I downright PERTIFIED to go off the pill and find myself in WORSE shape than I am already.
I don't know what to expect, whether I will fall apart, or when I can expect everything to fall apart. I merely coping with life right now. I'm scared that when I go off the pill, I won't even be able to cope anymore!
I don't know the answers to your other questions. I'm especially curious about the "postponing the inevitable" question. Hey, here's a thought: With the way I feel today, if I can postpone worse symptoms long enough, maybe they won't happen until after I'm dead!!!

I'm all for postponing!
Gosh, Lidge, I just want to feel better! Oh and don't let anyone tell you that exercise will automatically make you feel better. While it HELPS, I have been an athlete ALL my adult life, and continue every day to weight train and do elliptical (45-1hr). I remain suicidally depressed and [sometimes] overwelmingly fatigued. But, it I don't work out, I feel worse. I think getting those fews endorphins must help a tiny bit.
Take care,
Urcyn