Your first post was a little confusing and meandering, and I did not get the points from it you made here. I agree totally about holding back a little, letting her want you and set the pace. Yes, you can pester or bully a woman into seeing you, but it is not going to turn out well if you want to keep seeing her.
As for the main issue - changing the deal, my thoughts are pretty simple.
1. Know what you want and what is important to you.
2. Find someone who is offering, and likes, what you want.
3. Enjoy.
4. If you know longer like what she is offering and want something different, find someone new who is offering that.
It is tempting and we all have done it - you find a hot women you are really attracted to and chase her like hell. Then once you catch her you suddenly realize all the things about her (or the arrangement) that are not what you want, but she is still hot as hell so you set about trying to change her, try to convince her to do the things you want. It will work for a while if she likes you. But just like badgering a woman into seeing you, I have never seen this end well. Happy to list the reasons why if you need them, but I will start with the simple fact that you are pretty much criticizing who she is when you try to change her. Who wants that?
If you want a GF, look for someone who is open to something beyond sugar. Don't find someone who just wants a fuck buddy and then fall for her and try to change her. Yes, it certainly is true that many women do not really know what they want, just like guys. But betting that she does not know what she wants and so she will end up wanting what I want is still a losing bet. Unless what I want is a confused, emotionally immature person. For me, that might be fun for a date or two if she is really hot, but then I am moving on.
And I definitely do not want to stop paying my SBs. If one of them suggests that, I will be happy to discuss it before I move on. But I can't see it ending any way other than me stopping seeing her. Maybe if I was single, I would have a different opinion, but I want an SB, not a SO. Definitely not a SO. And if I was single and wanted a SO, I am pretty sure I would not be looking for one on SA. Yes, I am sure you can find one there, but a dating site seems a much better choice.
Been nice visiting, guys. Fly by over, and out.
zig