Access to Full Post Editor when Responding to a Topic

When creating a post, it is possible to format your question / discussion in such a way that graphics are able to be in line with the text and so convey something pictorially at an appropriate point in the post.

When replying to a topic, all you have access to is a tiny single line text box, and any pictures you want to include just get dumped in a row at the end. This makes it almost impossible to walk through a solution in a reply as you cannot add pictures at appropriate points in the text.

Can we please have a "full text editor" option (as available on most forums) when replying so that we can include pictures in line with a response to help communicate more clearly?

@MK @JB @RP @SJ