I expect I will indeed give PBW a shot as soon as the new patch comes out (I've heard that the current Version doesn't work with it due to a bug in command line execution). I've been holding back so far because retrofitting/scrapping/etc. is so badly broken in simultaneous mode. I like to retrofit a _lot_ in peacetime, always keeping my forces cutting-edge. Having to do it one ship at a time is such a pain. But I've been getting myself used to it, and perhaps the next patch will fix that too.
Now that I think about the "cheating" issue more, we've already seen Aaron be quite responsive and quick to close security holes in the past; when he released the map editor he promptly patched the game to disallow saving maps during play so that multiplayers couldn't use the editor to view systems they hadn't visited yet. I'm sure if this trainer becomes a problem there'll be ways to have SEIV verify other players' honesty.