I had always wondered why this was not available, especially after some of the issues we have run into with image hosting websites in the past. Is there any reason why it is the last option on the list (chronogically)? I assumed it was a difficult feature to implement and an expensive one too, but I do not have enough technical skills to confirm that.
The storage/data-transfer wouldn't be especially expensive, but it's a large feature to add, and then it's a whole new thing that has to be moderated. I wouldn't make something as open as TalkImg, since then after a few years I'd be getting like 100 DMCA takedowns per day which I'd have to figure out some way of processing. It'd have to be somehow a lot more restricted so that the long-term moderation burden isn't too high. I'd rather avoid having to do it at all.