Which Unique Units are in need of boosting?

[Guynemer]

While the musketeer is much better now, with 5 def and a free bombardment shot when attacked, it remains slightly overpriced. Worse still, its half-life is pretty short; before long, riflemen are available.

Perhaps if they had stats comparable to the rifleman, perhaps 4(2)/5/1... I think that would really solidify their place.