When working in plain text files I miss two features available only in RTF: Highlight and Links. It would be nice if those could be made available for plain text too. Wiki-Links are no substitute for real links, because they break when changing the name of target.
If it is not possible to make highlight and links work in plain text, I would suggest to do a conversion to rtf in the background when they are used (instead of disabling the menu items)
I would rather like to work with my notes in DTP in plain text only for three reasons:
- text manipulations (like global search & replace) via AppleScript are much easier to handle
- Drag and drop never carries some wrong formating
- No styles in RTF (what the OS RTF engine calles styles is batch assign and has nothing to do with a decent style handling - and the UI is worse than anything I ever seen in any OS. I know it is not your fault)