TBH I think that Squier represent better VFM that many of the top of the range gear basses - in recent years I've been pleasantly surprised with the build quality.
You don't need to change any parts - machine heads are perfectly adequate, change the settings on your amp rather than buy new pickups - probably won't stop anybody doing this though.
If I could have bought a bass of this quality for £189 when I started playing I would have been well chuffed.