I found myself agreeing with this post: Visual Editing still needs work.
It really now begs the question as to whether TinyMCE is the right choice for a rich text editor. How on earth are they gonna fix this mess? It would probably take a lot of collaboration with the TinyMCE team – lots of time and work. Just wondering when is the right point to cut your losses …
I can only assume the WP team have looked into the other options out there.
FCKEditor seems to be almost overkill, for my personal taste; I have to say I like the look of XStandard – maybe I’ll find the time to give it a test run.