I think autographs and GU's should always be limited. It's so sad how these cards can go as low as 0.99 for even semi-stars or nobodies.
I reckon autographs should always be limited to 100 or less per set in a product release, and jerseys not more than 250.. patches limited to 150 or less.
While it's nice that we player collector's can obtain autos at cheap prices, it's not too appealing when we show off our autos and then a million other people have the same card.
But I reckon limited print run should only go with autos/jerseys/and patches... as well as rookie cards. I reckon RCs should always be limited to at most 1999.
Gold parallels and the likes are crap. Even 1/1's. They're plain, and worthless, and so easy to make. It just makes our lives difficult. Even them refractors.
P.S... for 1/1 printing plates, they're crap. They should just release autographed versions to make it really worth something.