I don't even know. Then artillery units will have an advantage over Dungeon, where Lorelei and Shahti with 1 stack might appear. But on the other hand, not the strongest castles are available at the start for artillery, so I agree, but when should this restart be taken? For example, if I have a good starting position, I will play even without a ballista.
It's been a long time since restarts should have been implemented for Pikedram, Ufretin, and Lorelei.
Of course, you need to decide immediately whether to play or not, without any scouting!
P.S.: And in general, for reference. Ballista and Tent are used by specialists instead of level 2 monsters, because there are no Jems with gnomes or Pirs with ogres in SoD. Accordingly, the probability of a machine appearing is the same as that of a level 2 stack.