We do not need another superstar striker if our defense is set. Parked buses are hard to break for every team no matter what. You have to have a creative midfield (which he do have), patience (we always show that) and a good match plan (which Lucho should provide). But being vulnerable at set pieces kills you vs these teams.
So scout defenders that suit and improve us and try to sign them. But leave the attack as it is.
Considering "normal" games where both teams actually want to win Iniesta, Leo, Neymar, Alexis, Pedro, Deu etc. are more than enough. Plus our attacking fullbacks.
What do you want? A 2nd coming of the Galacticos? Of course Suarez, Higuain, Cuadrado and many other are great and could fit Barca. But there is absolutely no reason to spend a ton of cash for these players.
The board is stupid and do bad deals but they will not spend money as if they could print it. 90 mil. for Suarez? Fine. 50 for Higuain? Fine.
Sometimes it hurts to see what fans who seem to love this club expect.