well, its much harder than it seems. I have close to 8 years of experience (and I'm at one of the top colleges in the US for computer science), plus I've just got a natural aptitude for it. and it's still tough for me. but yeah, that's not to say it couldn't be done even if you knew programming. also, the 5th gen maps are not guaranteed to be either similar or dissimilar to 4th gen; we won't know until they're released. they could have a new engine, a new format, and/or a bunch of other stuff that would change things. i guess we won't know until someone gets a hold of the rom ;)