Come on dude... The only reason McCann would make sense is if we had a successor pushing in the minors... and we don't. Why not roll with Zuk and Flowers? If you add them up they were almost JT last season.
Donaldson may be healthy, we have no idea. His chronic, multi-season, calf injuries scare the hell out of me frankly. If you think Nick is a GG/AS caliber player, I really don't know what to tell you. He's been one of the worst starters in the majors over his ATL career if you remove last years 1st half. Even with it he only avg 1.4 fWAR / season. Now he's even older.
Grow up.