Remove the chicken and bat egg throw limit or reintroduce a dwarf build limit

Occasionally in DVZ, the dwarves will build high above the roof and shoot arrows down from there (Which I'll refer to as a "Skybase"). These skybases aren't a bad strategy, but the problem is that they are imbalanced. With lower-down bases, chickens can blow up the area or kill the dwarves in some other way. But with this type of base, it's above the projectile throw height and they lose the ability to do so. Thus, an easy place for dwarves to hide where they can infinitely shoot and monsters cannot reach.

There are three possible fixes:

• Re-introduce the height limit, where dwarves are unable to build above the roof.
  I do not think that this is a good idea, because the limit was very annoying and prevents other more logical strategies. It especially would be stupid if the distance limit were returned as well. But it's a potential option.
• Remove the chicken and bat height limit where they cannot shoot eggs from above a specific point.
  For chickens, mana won't regen in midair which means that they can't camp at y=100000000 and rain eggs down. For bats, they would still be able to do this though. However, I don't really think bats could abuse this too much. But if it seems like a concern, it could be removed for chickens only.
• Keep the egg throw limit, but allow throwing eggs if they are standing on a block.
  I would say that this is a better version of idea 2. It prevents the option of spamming from high in the air, but still gives the ability to remove any skybases (or target from them if a dwarf is foolish enough to make one). I think this is the best option.