For certain reasons (an RF dupe bug), a method of disabling connection to certain blocks would help.
In this specific case, the Phantom Energyfaces from Actually Additions have an odd interaction with Flux Networks that allows you to generate RF out of basically nothing. Hence, for pack creators, a way to blacklist the block as connectable would be really helpful.
#BlameSoaryn

Block/Item transfer blacklists will be available in the next version.
Also Phantom Energy Faces are now disabled by default.