Enter David Beckham. A remarkable talent with the dead ball and the ability to distribute deadly crosses, all of a sudden Jaqua is not useless. As a target forward his headers are his best weapon and it's a great weapon with the right pairing (See: Zidane, Zinedine/Trezeguet, David) The target technique spreads the defense and frees up your speedster to do his thing (See: Henry, Thierry)
Then the Galaxy has a young defense, Marshall was good, but he's lost a bit of his game, and he's never been the best at tutoring the youths.
Enter Abel Xavier. Widely considered a very knowledgeable footballer. A guy very willing to take pupils under his wing. And an exceptionally fit guy for his age. This guy is very likely going to be a manager after retirement so he's the perfect guy to lead the Galaxy defense.
So, even though the Galaxy did sign a marketable player, he also is a piece of the puzzle.
EDIT: Donovan would not be a striker once Beckham gets here.
---Harmes---Beckham---Martino----- (you can sub in Cobi and Sturgis here)
That would be Yallop's "3-3-4". Not the best plan, but it's what he's been trying to do. Although there's talk of him doing a "2-4-4" which puts the midfielders in a sort of diamond. The " " are there cause his formations aren't true 3-3-4s or 2-4-4s
Examples are obviously extreme, but there are other examples, these are just the most widely known