That is a huge concern of course. That's one of the reasons that the site my UBB is on is still built with .shtml and .txt files for the most part. I am experimenting with a lot of .php in my other sites but since I'm glued to flat files with UBB I not going to put the effort into Netwerkin to change over at this time.
I guess we need to see the first beta code when it's available to see how this is going to work. Your suggestions are great, and I hope they're listened to. I'll give you information just as soon as I have it.