Take the engine hatches, I am pretty sure if I bought the Pegasus BA-6 kit that these hatches would be perfectly well represented by being moulded onto the hull's body itself. But would they be as sharply and delicately as defined as they are in the UM kit?
It is a nice kit - I shall have to get some more UM models.
My only criticism of this stage would be the delicacy of the guns. I would prefer to find a brass turned barrel to replace the 45mm main gun. The machine guns are a little fragile too.
Next: Mating the chassis to the cab and adding the additional hull features. Let's see if I can get the construction phase finished!