well i guess forwarding commands to other (c++, vb) plugins wouldnt be that difficult, but regarding Plus! own commands ... i think that is virtually imposible
also some commands might produce errors and crashes because the arguments referencing the conversation window will be null
Though you should ask Patchou about it because he is going to implement a different plugin system in the next version, so he might implement that as well, as it is no biggy
Like a developer testing tool, for teh plugin developers/testers !