Why would you be very excited about Dmax for a negative? It's only really relevant for a display material, i.e. if you're using (as per DR5) the material for reversal.
Otherwise, 3.5 is plenty of range and represents a lot more than what you can fit onto a print.
And quit it with the Leicaphilia. Seriously, you know the camera doesn't affect the density of the negs, it's entirely down to exposure and processing.