Don't know if anyone was thinking about this , but ... To me it looks like we will see Messi playing a new role this season. I think it will be the same Barca like last season (remember the always empty box, and no one even close to the goal), only with Luis Suarez infront.
It could work really well, at least in theory.
At first it could look like this-->
---------------Ter stegen
Alves----Pique-------Bartra------Alba
-------------Busquets
------Rakitic----------Iniesta
Neymar-------Messi----------Suarez
And in game , like this --->
------------TS
Alves-----Pique----Bartra------Alba
------------Busquets
-------Rakitic
----------------Messi
-----Neymar-----Suarez---Iniesta
Thinking about it, change is needed on RB - someone more defensive would fit in like a glove.
edit - someone taller and stronger, yes.