Voted no. You'd light up the entire map in a few wards and the map is small as it is, along with sight options and altars giving you vision as well. Lanes are generally lit up with minions giving very little to ward in the first place. While I agree something should be done about skill-warding champs like Maoki, Shaco and Teemo, the Lantern and Hextech Sweeper are AP and AD options for SOMEONE to get one or CV.
Right now SR has very "meta" rules, who you play, what you buy, and people follow this formula to the tee. I think people just aren't used to playing the game a bit differently. Why can't someone just get a form of vision? If it's a problem, get it, if it's not then don't, lol. There's something to fill the gap, people just need to be willing to try it.