Well that is normal Post Prep that Glenn has mostly worked on and works well, but I think Radimus is wanting a bit more of automated UDF posting Template if I read him right.

I've spoken with Glenn in the past and we may work on an updated GUI for Post Prep but as usual day to day work often gets in the way.

Of note, though that Jooel has already fixed the main issue of why Post Prep was firt written by Jooel and Jochen in that you can now COPY/PASTE code directly from the the board to your editor and maintain the formatting.

Post Prep is pretty much only good for color formatting to make it look nice, with one BIG caveat.
Normal users on the board CAN NOT edit UBB/HTML Post Prep code that they post on the board, only Admins and Moderators have sufficient rights to go back and edit Post Prep code.

So given the limited use of Post Preps editing abilities I'm not sure how much time or effort would be put into a GUI for Template type UDF posting when only about a half dozen users could use it and edit it.