I'm specifically looking for one that will allow me to disable DHCP, but keep NAT activated. I already have an internal DHCP server. It's "all-or-none" with the AEBS (ridiculous, IMO).
positive. The only way to disable DHCP is to enable "bridge mode", which turns off DHCP and NAT. You can turn off NAT by enabling DHCP only ("Distribute a range of IP addresses" option under connection sharing), but not vice versa.