I have nothing against rewarding people who buy cartel packs. I have no problem with cartel packs randomly dropping certificates that can be used at the vendor, after all they only sell stuff that is available in the CM, so no loss there if you don't want to participate.
My only gripe is that it is linked to a reputation and as has been shown many times purchasing with credits will probably not be possible to even the reasonably dedicted player who does not play the GTN. Once the new cartel shipment comes in the old ones will not be buyable, assuming EA follows its current format so people have 4 months to buy there way to legendary rep with credits and the 5-600 cartel coinsthey receive a month, not possible for an average Joe in my opinion.
Remove the rep porption and everything is fine I believe.