The SilverStripe CMS is certainly pretty, and the back end is clearly easy to use for non-programmers. But it's just not quick enough or reliable enough for use by webdevs or someone trying to migrate from another CMS.
TinyMCE in particular is maddening. The controls are intermittent at best, and I need a way to enter raw HTML or -- even better -- Markdown-formatted text, directly. Yes, I'm aware of the HTML button on the TinyMCE panel, but it doesn't always work. Power users need to have the option of *not* using the WYSIWYG editor, just like you have in Wordpress, etc.
If there's any way to override TinyMCE, I'd love to hear about it.