The answer is balance. A team needs to have one u it be exceptional and one good supported by an above average ST.
My recipe would be:
1. QB who can win in the clutch. Does not need to be best in league but very good.
2. Multiple skill players with speed. You want many threats, not just one who can be neutralized
3. Defense built around pass D - bend but don't break.
4. A kicker who can make a long FG and ensure points go on the board.
You can not sustain a team full of stars so target the difference makers and fill in the rest.