Yes there's the G meter, but you have to look at it instead of keeping your eyes out of the cockpit. The triangle thing you would be aware of with your periphal vision (simulating the seat of the pants feedback).
Yes there's blackout and stalling, but unless you're really hamfisted or a beginner pilot, there's more to G management than that!
I realize the tip trails wouldn't always appear in real life, but they often would and it's a cool effect to see someone realize they're being bounced and the contrails appears as they reef it around.