When initially building my RR I used my stash of #6 turnouts which are usually fine in most places. However the more I ran trains of 80' passenger cars through the medium switches the more the angular appearance at the coupling bothered me.
So, where I had the space, I just finished replacing twenty one of #6 mainline tangent switches with #8 and #10 tangent and curved switches. What a difference when I run a train of 80 footers through the longer turnouts.
Gotta see where else I can squeeze in some of the larger switches. Those gentle switches help to project the serpentine appearance of scale length passenger trains. I still have a dozen or so of #6 mainline switches in tight or out of the way areas that will remain.
When planing a RR with long cars, consider looking to see where you can use # 8's or #10's. They really help to develop the prototypical "look". Especially up front n' center.
The original intention of this pike was multiple branch lines where #6's were fine. However with the addition of a couple of name trains that I just could not resist, those turnouts wore out their welcome.
