I get what you're saying, but in our current squad that simply does not apply. Technical vs Physical in terms of balance or heavily favoring one over the other is a debate that has no end. In context of our current squad, only Busi, Iniesta (on form), Rakitic(?) and Roberto have the bare minimum technical level to possibly forego and overshadow physical deficiencies or vice versa. Gomes is neither technically proficient and despite his physical stature, he has the physicality of basically a toddler. Arda can't play in the midfield period. Rafinha and Denis would qualify as Atletico style wide midfielders/wingers(?) in a 442. And Masche for all his qualities is not a good fit to play in a style of midfield such as Barca.
It's my opinion that technical play outweighs physicality if pitted against each other like we saw the physical French midfield overrun by technical and physically weak Spanish midfield in the International break. What plagues our midfield is years of mismanagement, negligence and outright incompetence when it comes to tactics and planning.
I wouldn't buy 3 physical midfielders.
BUT, I would personally (as a coach of Barca) NEVER play with 3 Xavis in midfield (ok, I would play with 3 cloned Xavis, but you get my point).
I would play with 1 guy like Xavi/Iniesta, one guy like Rakitic (but faster and technically better) and some Dmc like Busi but with some physical skills like Edmilson, Motta, Cocu etc.
Also, I would never play with 3 short midfielders and 3 short attackers, I hate that Pep's style.
It worked for some time, but when the opponents figured that out, it is totally sterile system.
So, I personally wouldn't buy Arda, Denis, Paco etc.
I mean, we already have 2 short attackers in Messi and Neymar, we have short Munir on a loan and then we buy Paco who is neither fast, neither strong nor anything.
Then when a team like Juve parks a bus, you don't have any options but trying over and over through the middle or waiting for a winger to dribble 2-3 players (and they are marked with 2-3 defenders all the time) and pass in the middle again.
Can you play long balls from time to time (in some actions)? No
Can you play crosses? No
Can you do something with attacking corners and free kicks? No
And then, our main targets next summer are Verratti (short), Coutinho (weak and short) or Bernardo (weak and short).
I love these guys, but we need some balance.
If we want Verratti, then we'll need some physical guys also.