Arduino Form Factor / IDE Clones Question?

There seem to be a lot of Arduino Form Factor / IDE clones on various other platforms like Maple(ARM) & Butterfly(FPGA) - Wondering how it would be if they can cross integrate the IDE - A single IDE to program any of these? Are there commercial IDEs that can do this? How hard will it be to build an IDE like that?

You might want to have a look at http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1254027990

Thats maybe THE solution?