Definitely understand where you're coming from, and it's become common knowledge that while a lot of Syn tabs get the NOTES right, they totally flub the fingering, even in the "official" tabs.
There was an effort Syn had going on with one of the advanced students to do this with a select number of songs, and I expect it will launch at some time, but there's no new information at the moment, and Syn's kinda busy right now.
PS: I wouldn't expect the tab books to be updated. It's expensive and City of Evil's book has been out for 17 years now - it ain't getting fixed.