On the one hand, any business that advertises "unlimited" and then limits it is a business I consider dishonest and an adversary. So I don't like your plan.
I see what you are both saying, and this would be for new clients, or those who want to convert.
We are seeing a heavy cut in web hosting clients signing up, and a lot mentioning the fact they are aren't offering 'unlimited' like the other hosts as a reason they are not signing up. Which is why we are entertaining the idea.
Yes, EVERY web host you sign up that is unlimited is an *, putting a clause in their ToS, or wherever that they reserve the right to shut you down for 'abuse'.
On the other hand, you do want to stay in business so I understand considering it.
Any chance you can do something like "Our Almost Unlimited package. Unlike the other guys, we don't lie about our services. But you'll almost certainly find the only limits are your imagination of how you can use it. For full details, click
here," and basically just make the limits what you were going to call abuse? Keeps you honest. Gets a dig at the slimy competition.
I might be dreaming though. People might really only care if it says "unlimited" or not. :|