Falcao to Madrid is a stupid move, I don't want to believe it but it seems like it's going to happen :( He's going to be expensive, he's had a serious injury this year, he's not young and he doesn't fit their frontline (nor the team in general, for that matter). So many reasons not to do it...
As for Barcelona, they didn't really need to improve their offense, but Suarez is obviously a good addition. I think that Suarez can work well with either Neymar or Messi, the only problem I see is that I just don't think Neymar and Messi can work together effectively. I think that Barcelona should have kept Alexis and played a 4-4-2 diamond with Messi as the number 10. And of course they still need to secure their defense...
Atletico seems to be doing their job well though, Mandzukic and Siqueira are good replacements for Filipe/Diego Costa and they are close to sign Oblak.