First, to each his / her own when it comes to if and why and how big and how gaudy to use watermarks and copyright notices on photos. Different people have different opinions and reasons for all of that stuff, and whatever works for them works for them, and that's good enough for me.
The reason I use a copyright notice is to make it clear that it's not a photo in "the commons" or in the "public domain". Truly, it's as easy as can possibly be to Photoshop it right off the photo, but that act is interpreted by Federal judges at copyright trials as proof that the infringer was knowingly engaging in something unlawful. Bad enough if they use copyrighted work without permission, but woe be to them that remove the copyright notice in the commission of that crime and incur further monetary compensation wrath.
Another common use is to develop name recognition in association with your photos. Should one or many of them become popular, it can't hurt to have your name on it / them somewhere, to make it possible for people to track you down in efforts to buy your work or commission new work from you. It's a cheap and effective way to advertise your abilities.
That said, I use a very small copyright notice, nearly always in the bottom right corner of the photo. I try to make it quite small yet still be legible, and in plain text to help with that. I also try to get the color of it to blend in with the colors in the photo, often, the color right there in that corner that it will be on top of, but slightly lighter or darker, depending. I want it to be barely noticeable, but there if one cares to look for it. So, I work to get mine to blend in as well.
What I found is that, for me, LR works well for making a watermark that will always be the same, on every photo, in a nice automated way. But as I want to blend it, color-wise for each photo, LR is more cumbersome to work with for individual photos than what I like to use instead, which is Photoshop.
In Photoshop, I have an action designed to place the notice, and then I can just change the color of it with the color picker eyedropper, clicked in a nearby suitable color, then sometimes adjusting lighter or darker just a tiny bit from there.
It works for me, but watermarks and copyright notices and such tend to be very personal to each artist and, really, only you can decide what's right for you.