From my perspective, adding more logistic hassles that doesn't increase sales substantially doesn't seem like a solid idea.
The first several years in biz, I believe this feature was a big help in getting me established. It was completely unique and I like to fancy that I was the creator of the concept. Keep in mind that my version combines texting with both memories and live slideshows. My biggest hassle is in having my other crews do it. It adds a layer of complexity that, at this point in time, doesn't make sense. I still include it in my larger, bundled packages but no longer offer it with the basic DJ service.
Incidentally, just my opinion here, having a text-only system is a yawner of a feature. People far prefer seeing their own picture pop up on-screen than they do seeing either texts or pics they're taking of someone else.