Landing on Planets With Atomics

Perhaps its time to drop the nothing bigger than HS 3 with atomic drives landing on a planet rule.<br /><br />HS5 can land and seriously I'm betting that the thinking in the '80s was that nuclear anything was bad so that led to that deal-E-O of no atomic powered craft over HS landing and taking off.<br /><br />Having looked at pages on wikipedia, atomic rocket page and etc the ill-defined KHs atomic drive really should be re-interpreted and if its update at all it would be silly to say that HS 5 ships can land as long as they dont have atomic drives.<br /><br />I say flush that rule.