Here are a couple of observations from me:
Negative (number denotes severity, strictly IMO):
Engine parameters in simulation not quite right: too powerful IMO, but without docs I am not sure. 2
No current shown in dynamic braking, probably due to its scripted nature because of the selector lever. 2
No sand filler hatches (but the old shape file didn't have them either?). 2
No drop steps and safety chains on the platforms. 2
No 26L brake stand. 3
Cars have different couplers from locomotive, cars' couplers seem to have bad physics. 3
No tail light on the caboose. 2
Raindrops on windows could be smaller through the use or larger texture. 1
Some strictly in-cab sounds audible outside. 1
No dynamic exhaust effects? 1
Opening a cab window should change the in cab sound background, the door on the engineer 's side does this a little. 1
Pneumatically operated windshield wipers' animations could be out of sync. 1
Headlights pure white, should be incandescent very light pink/yellow. 1
No step lights? 1
Positive:
Distinctive GP30 turbocharged sound
HiDef texture files with subtle weathering
Nice gauges, properly lit!
Independent 3 intensities front/rear headlights.
Working brake cylinders
Working class and numberboard lights
Working windshield wiper handles on the inside
Working cab light fixtures
Overall: 4 out of 5.
Good job by Cesar and his crew. Small mistakes could have been avoided by USA savvy independent testers' assessment.
There is some controversy over the cab windows' proportions will all of Cesar's models.

vs.
Screenshot_ScaleRail Cajon Pass_34.89967--117.05341_16-12-51.jpg
Personally, I like a good forwards view from inside. The Kuju SD40-2 I find claustrofobic.
I am probably too fussy or picky for some other posters, but all and everything is meant in a positive way to make an already good model better and close to perfect.
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