Why on earth do you need something like that?!
Although I see where youre coming from with this one; i see it as largely unnecessary.
If you wish to create a 'mock schedule' (dummy schedule) for an aircraft AWS has the ability to do so.
All that is involved is visualising the schedule as you create it.
Heres how i do it:
1: open up a whole heap of tabs; you will need these (!)
2: pull out the viable destinations for the particular aircraft you are considering acquiring; ie: OPEN the route
3: start making your schedule; (with smaller aircraft where utilisation can be lower (i: daily flights with some surplus time) this is an easier process). This is harder to visualise with a complex long haul schedule involving changing time zones; the date line (your worst enemy in long haul scheduling) etc, but it can still be done. Often this will involve a whole heap of chopping and changing; adding destinations, deleting destinations, changing times etc etc but isnt that what AWS is all about?