Hi op, I am a midwife.
As far as I am concerned, whatever the woman wants, goes. This is 100% your choice. It is however likely that your DH will be very hurt so it is important to have a calm and rational conversation about it. Ultimately though, he should respect your wishes.
Just a few things that struck me from your replies -
I always clear away any poo really quickly and without fuss; no one else in the room would ever know about it.
Dads generally keep away from the business end, unless the woman asks them to look.
I have never saw a woman birth naked. In fact, I often encourage women to birth standing, often holding on to the side of the bed, bed raised high. I position their partner at the otherside of the bed, facing them, holding hands if they wish. She has a sheet draped over her bum. I am the only person who sees anything. I find couples tend to like this set up. There are many other discreet positions also that maintain her dignity.
I also hate fuss and don't want to be touched when in pain. I simply told dh this and he stayed back out of the way. If you don't want your back rubbed, simply tell DH this!
The pool is often a good way to protect your own space - it provides a physical barrier around you!
Some women put on headphones, close their eyes and zone out of the environment. This might work well for you, whether you are alone or not.
Check the rules in your unit. My place asks dads to leave about 2 hours after birth, they then only get an hour daily visit. If DH isn't there for the birth, when will he get to meet his baby? It would be best to suss that all out. We didn't let dads in to visit at all for a few months there, so if a dad had missed the birth, he might have to wait a few days to meet his baby.
Your approach is a bit unconventional, but perhaps many women feel the same, but just don't have the balls to actually go for it? I think it is ok to put yourself first here, giving birth is a massive life event. I do believe it has to be based on what YOU want. It isn't a spectator sport after all.