It sounds as if you want an ELCS, I've read all your posts (but not all the replies) and it certainly comes across that way.
A couple of points have made me curious and I'm wondering about a few things that might be relevant.
Firstly you've had a premature vaginal birth and it was a negative experience for you, not painful but you didn't feel in control and you weren't able to hold your baby for a long time afterwards. (Sorry to hear that, I hope your DC is healthy and thriving now.) I wonder if you had any birth injuries at all? Any vaginal pain afterwards?
I understand that your baby was tiny and perhaps you feel that it doesn't really "count" as a vaginal birth, since you didn't birth a full term, full size baby, but I would argue that it is very relevant. From everything I've read and heard, and from my own experience, first time births are almost always more difficult than subsequent births, and subsequent births are more likely to be straightforward. Your body has already birthed one baby so it will be able to birth another more easily, irrespective of size. Of course there is always a risk of complications and injury, and I understand that you want to avoid it.
Secondly this might be a bit of a random question but I wonder if you have vulvodynia? As you mentioned pain when inserting a tampon.
Lastly I found this comment interesting
"I think I would resent my child for life if I had a major vaginal injury. The fact that these are relatively common shows that our bodies are in fact not ‘designed’ for birth."
I strongly disagree with this point. I think our bodies ARE designed for birth. I don't know what the evidence shows about the reasons for birth injuries, but if I was to hazard a guess, I would think that there are several factors (including the medicalisation of birth, chronic shortages of staffing and funding in the NHS, and - among some HCPs, not all - a lack of respect for the woman's autonomy and right to control her own birth).
I have two children, both born vaginally. DC2 (home birth) was much more straightforward than DC1 (hospital birth). When pregnant with DC1 I was scared of having a tear or episiotomy, I did have an episiotomy and swelling, and it was very painful for several weeks afterwards, but healed ok (took several months to be able to have sex without pain). With DC2 I did have a small tear and it was painful for a few days but less so and it healed more quickly.
Having said all that, it's irrelevant really, as if you want an ELCS, that's a perfectly valid and understandable choice.