I would also be interested in this. Would be great if someone at Vectorworks could make create it. Would definitely be beneficial for event organisers.
I would suggest the following:
Tent Manufacturer - Hoeker or Roder (this would define preset dimensions as per manufacturers specs by choosing...
Tent Span e.g. 6m, 9m, 12m etc.
Number of Bays: thus giving total length
Tent Bay Width: e.g. 3m, 5m etc
Leg Height: 2.3m, 3m, 4m, 5m
All these should then define things like tent peak height, tent roof style automatically.
For the wall option, if I could suggest selecting options per bay which would be: no wall, half wall, windowed wall, wall with door.
For the flooring, I would suggest options being: Board floor, cassette floor and no floor.
Would be a massive timesaver for me and a lot of event organisers I know.