I liked the whole strat of being able to tell if a person was buying wards or not. I also liked it when I could have an abundance of green wards without having to go back. Gave up a baron because i wasn't able to back and with how fast folks resurrect and how long it takes to B, i had no time to go back, but if i could just buy wards like i used to, id just have some on deck all the time along with my supp item.
Also just an added note. I feel like free wards have taken away some of the complexity of the game.