yes but a redsign does not gaurantee that and then you are actually in a tricky situation as you will need to do a lot of testing out designs but your users arent used to that and becuase its affinity based and not friend based the community can make a lot of noise. facebooks biggest advantage from a design perspective is that their users are used to change and that many wont even notice, that keeps things together there, with reddit it might not be so easy, buy we will see.