I've been using screen shots when I use the current online tool. Paste into Word, crop, no issues. But, RTF is far better. I posted on the WotC forums to try to get some additional information and/or explain what most DMs are trying to achieve. Interestingly, both WotC and LFR have strict guidelines for the RTF format... and that format is not the same as what the classic MB spat out as RTF. So, if they add RTF support (which would be great), they should support the WotC format guidelines.
Regardless, these changes are really very good. The value of DDI, which I already considered to be substantial, has increased dramatically. Having a good MB where I can have full editing control is a huge boon for me as a DM and organized play admin/author/editor.