We are without a doubt unbalanced, but I'm really torn on whether or not I agree on the overhaul comment, I've jumped from agreeing to disagreeing a number of times now, but I think overhaul is probably a little strong, I think we will see players leave ( but it'll be players that aren't going to be and haven't been involved for us so it's no loss ) and I think we'll see maybe 2/3 come in ( striker / CB / CM is my guess ) and I think that will compliment the current squad as opposed to overhaul it.
I think we all accept this season isn't going to be a promotion push but with the squad we have + the additions in Jan, I think we will be comfortably mid table which is a huge improvement on last season.
Re summer ( and this is just my guess ) I think we'll see 4/5 come in and probably a little more going out due to squad size and players wanting to play. Which I think will leave us with a much stronger and hopefully robust squad ready for a promotion push.
I think all of the above will obviously be heavily on the new coaching set up and how they settle in