Currently there is no direct way to hide steps, the current implementation basically uses 'hide if >curStep'.
But you can use the select everything in the current step (from a zero selection as all add functions add to to the existing selection). And then hide things using the normal part hiding ('h') feature. If you do that for all unwanted steps you end up with only the parts in the wanted steps.
I do have some additional stepping control planned, so I'll add this to the todo list.
I like your selection information idea, as there is currently only information about parts in the current step etc (using the 'I icon' in the lower right). I could extend that panel to include selection statistics and of create an additional part bin group like the current step info ones.
But you can use the select everything in the current step (from a zero selection as all add functions add to to the existing selection). And then hide things using the normal part hiding ('h') feature. If you do that for all unwanted steps you end up with only the parts in the wanted steps.
I do have some additional stepping control planned, so I'll add this to the todo list.
I like your selection information idea, as there is currently only information about parts in the current step etc (using the 'I icon' in the lower right). I could extend that panel to include selection statistics and of create an additional part bin group like the current step info ones.