So what's up with the roof? It looks flat to me. Not rubber?
Also need to move that water heater to the off-door side. There should never be a furnace or water heater on the door-side of the unit.
One of the units shows a third A/C unit. It would be my hopes that all three are wired in such a way that a logical circuit would allow for all three to be used but the circuit controls which one comes on and when so there is no chance of an overload.
As for the colors, I personally like the black and silver or the brown and black.
That is all.
Mark - the straight line roof you are seeing is the Newport. I'm unclear of all new Landmarks will be straight lined but Tom or Andy can weigh in on that. Also, I think the roof is white EPDM.
The Landmark 365, when optioned with 3 ACs, will have a AC Power Management system in it that manages the load (load shedding).
On some layouts (LM, BH, others, other Mfrs etc), there simply isn't enough room on the ODS to put the water heater and furnace, even with putting the furnace vertical. What would be truly bad is to have the furnace or water heater behind the entrance door when it's pinned open. I don't think we're presently doing that.