Milord I thought that having a belted wife slave could be a great idea to enhance her submission
The amount of moral violence I've seen there makes me pass on this idea. I deeply care for her and I don't want to abuse, so I pass on it.
I think you should do it. Please be aware that for many of us who live in a chastity / kink lifestyle, much of what you read here is not reality.
It took me years to get to a point where wearing a belt was possible. The reality is there's nothing wrong with taking a break, putting it in a cupboard for a few weeks, or only wearing it on date nights.
If your wife is submissive I think it would make a great present, and it has the potential to become a deep emotional journey for you both to indulge in. The abuse that you read about on here is certainly not what the wider chastity community is about, and it shouldn't be viewed as an instruction manual for your own relationship. But I think you already knew that. ;-)