Wouldn't that allow random people to increase your tax on domains you obviously don't want to sell ?
E.g. if you owned and actively used greyface-.com and I'd make an offer of 10 000$ just for the fun of it, either you literally give up your name (I eat the cost but that's a risk I could want to take) or you're stuck with a percent of that to pay every month/year even as nothing else changed for you.