I have a few 100 pics on photobucket and I'll just let them sit there. I see no way of canceling the account. The problem with drag and drop here is you cannot add comments between multiple pics. For one pic no problem, the text just goes in the normal message field. But for multiple pics they all come in together in the attachment section, no way to get between them.
You can create an album to create single links to each pic and insert in the post as before with photobucket but the limit is 10 pics per album and there is no way to rearrange or order them in the album. So if the album order is important you have to get it right when you upload, last one uploaded is the first one displayed.