And I don't just mean plot points, like "U/Y kiss, Jim joins the gang, William never existed," etc. I mean, like, the general style of the show in general, though plot points are good. Would you have changed the music? Added more drama? Humor? Made it more obvious that the show was in France? Take anything you want, and run with it. Just not too far. You still have to have the five main characters, XANA, and the general frame of the story.
Maybe this is a game...I dunno. Whatever. Either way...how would you have done it?
I, definitely, would have made it more dramatic and emotionally charged, because that's just how I roll. I also would have introduced a lot more anime SFX (sweatdrops, baka-hammers, etc)...and in funny enough contrast to the drama, would have included a lot more crazy (and slapstick) humor. Essentially, I'd put it on crack.
I'd also make it a bit more plot-heavy, aside from some episodes where I'd just let everything go crazy. I'd more thoroughly explore the backstory of the supercomputer and such. And everyone would have secrets. EVERYONE. Seriously, they had so many little plots they could have done, and they didn't. Waa

Few fun things I might have done- more obvious tension between William and Ulrich (like, throwing things at each other), more Clone!Willie (seriously, they gave him way too little screen time), and more cowbell. The series had no cowbell. How can it have no cowbell?
Well? What would you have changed? I'd like to know. Seriously. This is your time to let it all out.
I hope this thread is acceptable...and doesn't start any fights. Remember, this is how YOU would have done it, not how it SHOULD have been done. Kay? Kay.