Yes it could work - if you know the workings of a Raven there is absolutely no reason why you couldn't knock one up.
Definitely it would need padding with something. I find even a real Raven works better with a bit of padding...
incidentally - I appreciate you are using ****** codes for the bits and pieces, and that you may even have seen that done on some of the older messages, but please try and be careful of tipping the gaff. If the peaople reading already know about the gaff, then Lemons and Aardvarks work fine, if they don't then they will pretty easily guess terms like "D****e S***d T**e etc.
Sorry to be all bossy
