I thought you were quite critical of his opinion to exclude Herrera, personally I prefer a manager to adapt to his players but I respect the manager's methods and expect him to do things as best as he can, if a quality player like Herrera suffers then so be it, if he hits his objectives then it's not too important what players are excluded.
I do rate Herrera as an 8, I have actually said many times before Herrera is one of our best players but the manager will put his system above any one player, he likes four defensive (CB, CB, holding cm, holding cm) and then more of a shadow striker ahead so i'm not surprised this is exactly what he's trying right now.
I have also said stop using last season as a measure of what he will do this season, as an example Fellaini was very important to his methods but that is uncharacteristic of Louis van Gaal, it seems his adaptions last year were due to his selection, now he can play his creative player further ahead like he prefers and he can have the physical presence provided from behind.
You want a seventh centre back and as of now fifth striker? (Assuming Januzaj is striker as the manager said, if he goes on loan that's still a fourth striker).
And by the way if you rate the system then you accept Schneiderlin is more his profile for 8 and Depay for 10, you can see why Herrera has suffered despite obviously being an amazing talent.