Well, it makes you easier to scout once your players all have the same special offense. I am switching lineups and offenses all the time to some degree, so I guess I´d try to get at least two different offense thingies going for my team.
Actually, if the bonus is small enough to not blast games but simply add a little (like .2 gameshape bonus in that very tactic) it could be quite fun.
Zwei Dinge sind unendlich, die Dummheit und das All...