To me one of the appeals of a rewrite is that the current XenPorta isn't very intuitive. It's simple enough to set up a recent news block and such, but things like layouts and categories aren't used by many people and I think that's just because they're confusing to implement. While I think this could be helped by writing some kind of user guide or documentation, the current system does really show that many of these features were not here on initial release and were kind of slapped on as the years went by. I can only speak for frontend stuff like this though, I'm sure that Jaxel has a far more significant reason to want to rewrite so much code.
I was speaking more on the crowdfunding aspect of this project. A fresh rewrite that improves the intuitiveness is intriguing but hardly necessary for those who've found their way around the current XenPorta. The lack of a real feature set or even a vision for the project other than "rewriting the code" was personally concerning. Combine that with hardly any communication from Jaxel and you end up with a situation like this where people are frustrated and worried.
I'm sure XenPorta 2 will be a vast improvement and probably have some nice new features when its released but I'd hate to see people be turned off from crowdfunding again because this particular one didn't go smoothly.