I came across information that there are new Visa Signature Preferred cards (a level above even Visa Signature) that came out last year that are aimed at big spenders who spend more than $50k a year on their card. From what I've read though you can't openly apply for one of them. You have to have a Visa Signature credit card that you are spending a lot on and it is up to your bank whether they want to bump you up to Signature Preferred or not.
I haven't been able to find the Signature Preferred features and benefits anywhere listed and I haven't been able to find what cards will have this level on it. I'm assuming it is the existing Signature cards already on the market?
The sucky part is that stores have to pay credit card processing fees with the Visa Signature Preferred that are even higher than the regular Signature card level. The normal Visa Signature level was SUPPOSED to be exclusive but they downed it and started offering it on like every single Visa out there so it's no longer anything special I think.