Yes, I am serious and it's not a dumb idea at all, I think. Maybe 500 shots is not the right number for each yard, but some sort of wear option should be possible. And is one yard or two yards really going to make that much difference to your game? I think not.
Re the trade-in option, we should have (per Adam's suggestion?) a place where we could go and offer our old gear for sale - maybe WGT gets a percentage of the deal price for acting as a broker - or even GIVE IT AWAY to a named player. It is my gear, after all, so I should be able to do with it what I want.
It's not a bad business model either. Lots of folks will go for new stuff (as in the real world), but lots of folks are sure to take advantage of the trade option as well. More traffic in gear, therefore more commission for WGT. We get clubs we want in the way we want them, WGT makes money in the old way and in a new way.
As we say in the UK, "Simples..."