Problem with that, Guns, is that slaves can't connect with anything except the master. Meaning that even if it had wireless functionality, it wouldn't be able to connect with other nodes, such as all the nodes making up the Matrix at large.
As for not being able to hack cyberware, that is a shortsighted ruling, like saying "Stunbolt is too powerful, so I'm not going to let mages cast spells". One of the risks of Cyberware, one of the things that balances it against other types of enhancements, is that it can be hacked. Take away the biggest disadvantage of cyberware, and it gets overpowered. Yes, chromed up street sams should worry about hackers getting in their system. That is one of the checks on street sams. But being able to hack cyberware isn't as uber as some people seem to believe. You're still limited by the functionality of the ware, and to make opposing commands, it is an opposed Command test. Being able to hack cyberware is no more overpowered than being able to hack any other node. Especially if the person uses proper matrix security, having firewalls, Analyze programs, and IC, as well as slaving everything through his PAN, which can be turned off and back on, resetting any hacking attempts people might be making.
Your ruling is overkill, IMO.