well you may or may not consider this an issue...but if you take off ad integrated, A. DCs, if not configured properly, will end up with different information in their zones, leading to all kinds of minor and major problems B. No more multimaster replication (aka; fault tolerance) of the DNS zone.
Either way, not a good idea.
-Brandon Wilson
MCSE:Security00/03
MCSA:Messaging00
MCSA:Security03
A+