No, because ranks are absolutely useless. And paying someone to boost your team's rank is not only stupid, a waste of money, and pretty pathetic - it also defeats the purpose of being on a team at all.
Get a good team if you feel you're too good for them. Or, if you feel you're on par with them - try actually working as a team and working well as a team.
Hell no. "Clans" are freaking stupid, and take away from any sort of fun you can have in a game, and the fact that people most probably *have* forked cash over to hire great players just proves it's stupid.
Paying someone to do something for you that's supposed to be part of the fun? Hey, let's grease the swing seats and give everyone 100 trillion gold and make all the bullets do AOE to the whole map and have infinite clip and have every shot kill yes!
I don't even know why you'd consider doing something like this.