Do people run in wars before given the order thier CO? People don't win fights or ground by running away. At least unless it's unwinnable from the start then, well, you don't engage. (IE: Check the targets before you commit to combat)
Also, then don't bring a small ship to a location where there is likely to be FDL's/Cutters/etc/etc/etc.. Unless of course you can handle being properly evasive, (With a decent set of thrusters a Viper is more than capable of dodging most shots from projectile weapons, even down to multicannons), Always make sure your thermal resistence is high to circumvent the biggest threat of ToT hitscan weapons, or turrets, run a dispersal weapon, (Often more useful on a smaller vessel than TLB as most of them can flat out outrun missiles with no difficulty((If possible aim for boosts of 700+)) and don't fly at your target, EVER. Trust me, small ships are more than capable of lasting long enough to survive even against bad odds. Quite often I find myself being mobbed by FDL's and the like when in a Viper. Seldom do I ever die, like really seldom. Moreover against a fair number of opponents, I can run the Viper empty of lead and still escape with sufficient evasion. Yes small ships have a smaller margin of error, but limiting the people who can actually fly because some can't is why we have "High" and "Low" states to define the difficulty in the CZ's/etc.
Honestly I think it's a good idea, but maybe have an extra level, like how they implemented higher threat USS' with the bugs. "Extreme" CZ's or something, for people with a high skill level and the ships to compete. That way no ickle nooblets wander in there accidentally and get mauled.
The low/medium/high have for most part never really indicated difficulty, they where used to describe how often new ships arrive. And most of the time, high usually was easier, as in conflict zones, that meant less waiting for more friends, as compared to low, where reinforcement arrived more spread out.