I am rather surprised at how low these refresh rates are. I know that they weren't particularly going for super fast rates like the latest scopes, but dropping below 100Hz (wf/s), as you say, is getting to the point of being visible.
My WaveJet is Iwatsu rather than LeCroy but LeCroy had a major input in the design if not the manufacture and the wf/s are much higher even though it dates from 2005/6 so is a simlar vintage. It is of course easier to have higher wf/s when the scope does less but it is more the design criteria I'm interested in. LeCroy designers just had different priorities at the turn of the century.