The previous answers point out two things:
- add/modify a middle name
- use a pseudonym
I can agree to the first one, but the second seems more trouble than it is worth, as you yourself state. Further, I find modifying your name a bit of an extreme measure, i.e. "legally" changing your name, solely for the purpose of academic recognition.
I'd advise you to shift your view to other means of identification. All papers that I came across have some information regarding the institution of the authors and their emails. This info is also mostly freely available, even revenues that charge you for the paper usually allow free access to the abstract and author information. So, I don't really see a problem that someone wouldn't be able to contact you or find your website or your profile at your institution. Even with a large amount of redundancy, e.g. someone with the same name at the same institution, your email is still unique.
Consider also that a great amount of publications require a bio of the authors, mostly including a picture.
You mention citations, they are kept intentionally very concise, because they primarily point to the reference in the literature section of the paper. There is the full reference to be found and by following the above approach, everyone interested will be able to identify you.
The point being, aside from taking very drastic measures, you will not be able to guarantee that your name is/stays unique.
I suggest you stay with your present identity, the one which identified you throughout your life and which family, friends, and colleagues use to identify you and let the scientific community get acquainted with you as you are. I'm sure in time you'll see that it isn't such a big deal and your earned scientific renown won't suffer.