Lightweight client?

I wasn't really sure where to post this, since there's no suggestion board or anything, but..

Basically i'm annoyed by the pvp net client using 800 megs of ram. There's really no reason for it to use all that ram as far as I can see. I don't really need a bunch of youtube videos and garbage clogging it up. I'm mostly making this suggestion because recently it actually hangs my entire computer when I log in. Probably a temporary driver issue, but it's pretty ridiculous regardless. So, yeah. Obviously it will also help with people who have limited amounts of ram, as there won't be nearly a gig of ram used in the background for no reason during games..

TL;DR: Can we get a lightweight client that's just a friends list, runes/masteries, and champ select? you know, the stuff we actually need to play the game?