@Stan Galat Everything you say is true.
It is also possible today to have a calibrated(empty is empty and full is really full) gas gauge that doesn't wave at you like a wild ballet dancer when you hit bumps. Stepper motor gauges with built in hysteresis by Speedhut.
A low brake fluid warning light is unnecessary, if you actually monitor and check these things, like you're supposed to.
What I find beneficial is a sequential shift light, and definitely a rev limiter. Both modern conveniences that add to the fun factor, and take away some of the worry.