If things completely break this is likely more to do with your (wrong) interpretation of key sliders than anything. Take for instance the TC's concepts of "strategies" and "philsophy" which are based on SI-approved community theories of yore. The theory was that for a team to play with a coherent style and shape the mentality notches needn't be further apart in each team than this many clicks. Now take the concept of "duties". It links most roles and positions to runs from deep, that is movement and shape. Both forward movement between the lines and forward players "dropping into space" which both adds linking options in attack and helps to trouble defenses rather than keeping the shape of a team completely static. At which point you solely rely on hopefully superior attributes of your forwards to regularly cause trouble to a defense, either by having great players from the start or (the popular route) scouting and nurturing fabulous re-gens. These are arguably the two sliders with which you can completely royally mess up, as these are very sensitive, and this was knowledge that was communicated to the community way before the TC ever was. (The TC was introduced for FM 2010 in 2009.)
Furthermore, yes, you can try to make Brentford play like Barcelona, but as attributes are weighted in, it usually means it won't be as effective. Players of lesser skill are for instance favored and hard-coded to hit more direct balls more often (you will find patch notes on that), in particular under pressure. Likewise there is usually a reason why there is an in-game advice telling you a more direct approach might be preferable in lower leagues and with lesser skill. Whilst there might be means of micro control taken away of the player, if that is the case, I remain optimisitic, as focusing the tweaks of the ME on a limited number of concepts means the tweaks can be based around those concepts, rather than an indefinitve number of slider tweaks. I.e. according to Paul Collyer his wish was for the roles to be much more distinguishable on-pitch, which would certainly make for a deeper game experience rather than a shallower one. Those tweaks would go two ways, as the AI is employing the TC too. Doing such requires a bigger shift towards these concepts though, and that is where the changes for FM 2014 might step in. Might step in. We haven't really seen what the tactics UI looks like.
Oh, and Tankqull, if these are still your tactics you likely will benefit from learning to think holistically and approaching the thing logically rather than slider willy-nilly too. Doing so will bring you a tad better results right from the start, not from the moment in which you have class forwards that make up for the completely static shape and disrupted mentality of your team.