If you had asked me this question 10 years ago I probably would have answered something along the lines of, just eliminate them all together. They don't cause any pleasure and all they do is cause pain, it's not worth it. So eliminate them.
However, today and as of 8 years ago my answer would be, and is very different. I met Doc 8 years ago as of Jan 9th and he is the biggest I have ever had. Now, in the past sex hurt and was really uncomfortable and I hated it. But oddly enough even though Doc is a lot bigger, he fits perfectly. It's a bit painful at first when he enters if we have been away from each other for a bit, but it's a good pain, a pain that hurts so good if you know what I mean. Oddly enough I love that good pain as he stretches me out the first time. So, for the first time in my life I absolutely LOVED sex. Sex for me became fun, exciting, and multi orgasmic for both of us actually.
There is bad sex which is what I was always having and was all I new until I met Doc. There is sex, plain old sex. There is good sex, both had a good time, maybe she came and maybe she didn't, but you think she will come back. There is great sex. You made her orgasm, you did too. She gave you good head prior to and she liked being on top, she will come back. Then there is oh my god, I can't catch my breath, I came so many times I lost track, it's 0 outside but you both are drenched in sweat, you are dizzy, thirsty, and you still can't see clearly, rip roaring fucking damn great sex. The last kind of sex is what Doc and I have all the time.
Again not bragging at all here. Doc and I fit together perfectly. He has told me many times when I have asked him what the difference is between the other women he has been with and me,(I know you men hate those kinds of questions, lol) he said that while sex was good with the others, it didn't feel as good and when he is in me he feels right, feels like the perfect fit and feels like I was made for him. And no, he wasn't just saying that to make me feel good, lol. I feel that way too about him.
So back to the question at hand and someone else above me said the same thing. If I could change a penis at all I would make them so that they could be adjusted to fit exactly right like Doc and I do. Having the perfect fit is a feeling that is out of this world and isn't all that common actually. I wish everyone could have sex like we do, and feel the greatness of a perfect fit.