I believe it has been stated the intent IS to make it as historically accurate as possible. Hence: the detailed scrollwork.
If you scroll back through this thread you will see discussion of attention to such things as brass fittings etc. that we want to see done as accurately as possible.
And on top of that, we have Coach #3 for a model! So we don't have much excuse to short ourselves on accuracy any more than we absolutely have to, and that's been kept to a respectable minimum so far. Decals are COOL!
Scrollwork is COOLER.