D) YES IT WOULD !!!!
Honeypot DNS, Conflicting DHCP server on an A/S
C) Its a support forum, unless its not legit (hence supporting the ''security'' reasons not to open the ports), why would you not share the goal, as we would be able to provide actual alternatives insted of arguing over ... nothing !!!
D-2) I care because its what I do, what I like. I care because I try to understand and help.