Personally I'm not desperate for us to sign anybody today, and I also don't really think we will. I think you're right that we don't have a huge amount to play for, so it doesn't seem like we need to get people in.
Where I disagree though, is I think the idea of 'just waiting for the summer' is equally as pointless as signing someone now. There are clearly positions which we need to address - from the manager's point of view as well as the fans - and if we haven't managed to address them in 2 transfer windows, why should be so confident that we will be able to do so in a 3rd? Is a player going to miraculously appear in the summer that we were previously unaware of? Or is it actually just as likely that we end up signing somebody in the same circumstances in the summer?