A hatchet yes... I think you underestimate the power of a fullsized axe. I love my BM but it can't out-chop a fullsized sharp axe. But as I said earlier... unless you plan to do some serious chopping... an axe can usually be left at home.
-My folder of choice would be a yellow-handled Case Sodbuster in CV. Does my menial tasks and is good for delicate work. Very easy to keep a sharp edge.
-Fixed blade would probably be a mora of some sort. Scandi grind makes it easy to maintain and it does tasks that the folder can't.
-Small hatchet for chopping. It'll be good for splitting small chunks of wood and getting to dry timber while being relatively lightweight.
Nice combo... I lean towards either a [Folder + Large Fixed Blade] combo for small trips or a [Folder + Medium Fixed Blade + Axe] if I am going deep in the woods and need a serious chopper. For those the tools I choose are
Folder = Leatherman Charge XTi
Medium Fixed = Busse NO-E
Large Fixed = Busse FBM (Soon to be my new NMFBM)
Axe = For the longest time it's been an old Collins that I really like... but I'm getting a Gransfors Bruks Scandi Forest Axe so I'm excited about that.
Those tools pretty much get it done though. I do own a Estwing Hatchet that I put an amzing edge on and it's a really performer... but my Busse BM keeps up with it just fine and can do things my Estwing can't.