Hi Walli,
This has already been requested, and unfortunately, it will not happen, at least not during version 7's lifetime.
PostScript outline OpenType fonts have many characteristics that would be currently difficult to implement in PlanetPress, it would be quite a lot of work to implement support for those fonts. We also haven't had that many cases where the customer absolutely required the use of a PostScript OpenType, and in the few cases where they did, there are workarounds, such as using a font conversion software.
The hard work required, the low demand, and the existance of workarounds are the reasons why this will not be implemented for the time being.
Regards,
Raphaël Lalonde Lefebvre