I wish you would bring back editing where I can use tags. It is more powerful.
With the WYSIWYG editor (current), it is not possible to break up quotes into segments to address individual points in the parent post one by one. I have to quote it in its entirety and then write a large block - which becomes confusing, or post multiple messages.
Sometimes, you want to quote multiple people at once also.
It is also difficult to move the cursor above a quote, in case you wanted to write something that isn't a direct reply to a previous post, but also reply to a specific reply later in the same message.