Its like the major bounty hunter update, everyone hated it and bitched about it becoming OP. Few weeks passed and majority seem to love it. With time everyone just accepts the change for the better
I got mine free when i bought something quite a while back its worked flawless for around 1 and a half years. Works great if your signal is not very strong using wireless.
Think they cost around £30 ish to buy though.
I had this issue and solved it by buying a Power line Adapter. Works almost as good as having a wired connection into your router by using your electricity. http://www.tp-link.com/en/products/list-18.html
Could just have the cartel give a similar turf style bonus for increased rubber from processing oil aswell as the rubber it produces. Then it becomes slightly more appealing to take if your doing oil runs.
Current loss of rubber for not having the cartel when running oil is hardly worth going to cap it from what i see.
Another idea could be to also have oil produced in the cartel box since most times its needed when you get your rubber